Statement Of Income
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of income | ||||||||||
| Statement of income | ||||||||||
| Operating revenue | ||||||||||
| Net sales | ||||||||||
| Net sales of completed construction contracts | 
                                                262,732,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                248,681,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                197,431,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                186,930,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Operating expenses | ||||||||||
| Operating expenses - general | ||||||||||
| Remuneration for directors (and other officers) | — | 
                                                485,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                424,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Welfare expenses | — | 
                                                504,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                466,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Rent expenses on land and buildings | — | 
                                                1,307,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                1,196,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Taxes and dues | — | 
                                                706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                538,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | 
                                                1,024,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                735,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Operating expenses | ||||||||||
| Cost of sales | ||||||||||
| Cost of sales of completed construction contracts | 
                                                221,382,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                208,302,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                171,213,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                161,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Selling, general and administrative expenses | 
                                                18,312,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                15,340,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                14,780,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Provision of allowance for doubtful accounts | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Operating expenses | ||||||||||
| Other operating expenses | ||||||||||
| Operating expenses | ||||||||||
| Research and development expenses | 
                                                1,467,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Operating profit (loss) | 
                                                23,037,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,998,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                10,877,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                10,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Ordinary profit (loss) | 
                                                23,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,272,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                11,918,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,515,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating income | ||||||||||
| Interest income | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                44,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| General and administrative expenses | ||||||||||
| Salaries | — | — | — | — | — | — | — | — | — | — | 
| Donations | — | 
                                                55,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                49,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Gross profit | ||||||||||
| Gross profit (loss) on completed construction contracts | 
                                                41,349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                26,217,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                25,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Selling, general and administrative expenses | ||||||||||
| Employees' salaries and allowances | — | 
                                                7,258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                6,057,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Advertising expenses | — | 
                                                698,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                261,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Legal welfare expenses | — | 
                                                915,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repair and maintenance expenses | — | 
                                                68,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                68,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Stationery expenses | — | 
                                                171,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Communication and transportation expenses | 
                                                1,284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,137,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,098,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Power utilities expenses | — | 
                                                143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                149,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Research study expenses | — | 
                                                1,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                964,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Entertainment expenses | — | 
                                                596,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                638,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Insurance expenses | — | 
                                                28,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                26,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Miscellaneous expenses | — | 
                                                772,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating income | ||||||||||
| Dividend income | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                391,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                405,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                405,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating income | 
                                                789,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                628,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,180,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,060,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Financial revenue | — | — | — | — | — | — | — | — | — | — | 
| Other | 
                                                59,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                89,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                85,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Extraordinary income | 
                                                1,214,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,214,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating expenses | ||||||||||
| Interest expenses | 
                                                240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                241,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                80,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                67,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating expenses | ||||||||||
| Non-operating expenses | ||||||||||
| Non-operating expenses | 
                                                347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                354,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                139,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                120,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Financial expenses | — | — | — | — | — | — | — | — | — | — | 
| Other | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Extraordinary losses | 
                                                731,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                227,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                227,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Impairment losses | 
                                                336,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                336,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Extraordinary income | ||||||||||
| Gain on sale of non-current assets | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Gain on sale of investment securities | 
                                                1,140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                1,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Profit (loss) before income taxes | 
                                                23,963,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,997,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                13,268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,865,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Extraordinary losses | ||||||||||
| Loss on retirement of non-current assets | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes - current | 
                                                7,372,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,299,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                4,668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes - deferred | 
                                                -917,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -520,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -513,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| General and administrative expenses | ||||||||||
| Income taxes | 
                                                6,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                4,147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,066,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Profit (loss) | 
                                                17,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,799,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,121,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,799,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,799,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,799,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |