Balance Sheet
| Concept | As at 2025-02-28 | As at 2024-08-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,293,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,005,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts receivable - trade | 
                                                140,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                145,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                24,206,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,468,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                1,625,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,306,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                168,138,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                132,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                2,421,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,140,498,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                1,386,041,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,140,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings, net | 
                                                1,242,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,045,956,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings | — | — | 
| Other, net | 
                                                143,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Intangible assets | 
                                                426,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                452,201,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill | 
                                                344,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                361,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                81,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                609,211,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                548,067,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                163,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                141,760,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Own-used assets | ||
| Intangible assets | ||
| Other intangible assets | ||
| Investments and other assets | ||
| Deferred assets | ||
| Deferred assets | 
                                                1,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,614,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | ||
| Assets | 
                                                4,048,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,451,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Accounts payable - trade | 
                                                220,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                222,824,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current portion of bonds payable | 
                                                65,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current portion of long-term borrowings | 
                                                383,766,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                424,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                69,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                111,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                288,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                353,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,075,520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,251,541,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                48,749,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Non-current liabilities | ||
| Non-current liabilities | 
                                                1,217,308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,429,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Bonds payable | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                984,447,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,172,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                73,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                159,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                144,032,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                2,292,829,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,680,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                1,755,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                770,254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                467,355,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                457,355,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                830,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                760,254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                1,755,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                770,254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                4,048,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,451,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings |