Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | 
                                                1,617,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,416,493,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and deposits | 
                                                979,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                767,481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Prepaid expenses | 
                                                36,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                21,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Buildings | — | — | 
| Buildings, net | 
                                                796,873,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                836,463,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                695,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                695,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                1,768,201,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,808,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                16,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Structures | — | — | 
| Structures, net | 
                                                2,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Own-used assets | ||
| Tools, furniture and fixtures | — | — | 
| Tools, furniture and fixtures, net | 
                                                213,429,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                240,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                56,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                55,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,106,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Telephone subscription right | 
                                                1,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                692,808,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                553,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shares of subsidiaries and associates | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,243,895,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,108,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Guarantee deposits | 
                                                510,380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                516,026,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term prepaid expenses | 
                                                30,706,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                3,068,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,981,830,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Current assets | ||
| Merchandise and finished goods | 
                                                8,987,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                1,380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | ||
| Assets | 
                                                4,685,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,398,324,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Other assets | — | — | 
| Liabilities | ||
| Non-current liabilities | ||
| Non-current liabilities | 
                                                539,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                517,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                109,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                163,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                177,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                89,258,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits | 
                                                72,113,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,330,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term accounts payable - other | 
                                                21,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Guarantee deposits received | 
                                                84,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                785,137,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                712,754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - trade | 
                                                420,104,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                371,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - other | 
                                                5,205,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accrued expenses | 
                                                114,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,851,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                29,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,244,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accrued consumption taxes | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                81,686,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | ||
| Lease liabilities | 
                                                58,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,981,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Contract liabilities | 
                                                53,524,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,957,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                17,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Deposits received from employees | 
                                                4,415,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,324,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,229,824,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                3,074,980,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,979,921,000
                                                
                                                    
                                                        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 | 
                                                2,876,722,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,781,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Legal retained earnings | 
                                                67,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other retained earnings | — | — | 
| Retained earnings brought forward | 
                                                316,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,836,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -71,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -71,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                285,916,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                188,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                285,916,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                188,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                3,360,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,168,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                4,685,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,398,324,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings | ||
| Other retained earnings | ||
| Valuation and translation adjustments |