Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                672,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                842,268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Prepaid expenses | 
                                                34,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,907,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                14,847,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                2,392,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                1,382,782,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,530,211,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                35,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,094,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                3,441,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,397,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                2,165,754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,006,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                695,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                695,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings | — | — | 
| Buildings, net | 
                                                866,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                864,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                211,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                195,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Structures | — | — | 
| Structures, net | 
                                                8,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,024,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                57,330,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                56,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,218,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,327,066,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investment securities | 
                                                694,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                797,960,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shares of subsidiaries and associates | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Guarantee deposits | 
                                                492,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term prepaid expenses | 
                                                21,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,725,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Own-used assets | ||
| Tools, furniture and fixtures | — | — | 
| Tools, furniture and fixtures, net | 
                                                308,384,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                203,077,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Telephone subscription right | 
                                                1,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Other assets | ||
| Assets | 
                                                4,824,206,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,928,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Other assets | — | — | 
| Liabilities | ||
| Current liabilities | ||
| Accounts payable - trade | 
                                                430,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                383,739,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - other | 
                                                12,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,437,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current portion of long-term borrowings | 
                                                9,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                84,481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accrued expenses | 
                                                109,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                8,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,649,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                43,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Contract liabilities | 
                                                56,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,239,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                780,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                785,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accrued consumption taxes | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                20,110,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Deposits received from employees | 
                                                4,526,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                770,779,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                775,545,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                233,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                238,338,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                96,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,453,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                206,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,224,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                90,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                89,988,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits | 
                                                79,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term accounts payable - other | 
                                                21,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Guarantee deposits received | 
                                                42,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,551,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,560,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                3,003,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,025,950,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                270,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                13,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Legal capital surplus | 
                                                13,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                2,805,768,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,827,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Legal retained earnings | 
                                                67,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other retained earnings | — | — | 
| Retained earnings brought forward | 
                                                283,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,703,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -72,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -71,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                269,469,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                341,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                269,469,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                341,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                3,272,633,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,367,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                4,824,206,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,928,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Valuation and translation adjustments | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings | ||
| Other retained earnings |