Semi-Annual Balance Sheet
| Concept | As at 2024-05-31 | As at 2024-02-29 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,705,140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,558,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                108,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                2,168,760,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,947,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                2,830,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,852,474,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Tools, furniture and fixtures | — | — | 
| Tools, furniture and fixtures, net | 
                                                60,803,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                1,862,824,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,862,824,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,135,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                110,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,347,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                668,606,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                664,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term loans receivable | 
                                                30,268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,265,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                125,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,286,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                17,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,914,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -1,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,209,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                3,610,035,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,629,126,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                5,778,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,576,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Accounts payable - trade | 
                                                147,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                164,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                8,454,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                171,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,456,313,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,518,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                2,575,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,408,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                2,329,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,160,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                162,549,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                72,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,541,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                4,031,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,926,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for bonuses | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Share capital | 
                                                50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | ||
| Capital surplus | 
                                                1,370,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,370,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                470,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                373,137,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -151,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -151,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                1,739,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,642,296,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                1,747,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,650,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                7,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,854,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                5,778,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,576,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |