Quarterly Balance Sheet
| Concept | As at 2023-10-31 | As at 2023-04-30 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                4,658,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,957,469,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                129,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                5,931,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,160,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                268,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings | — | — | 
| Buildings, net | 
                                                154,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,096,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Tools, furniture and fixtures | — | — | 
| Tools, furniture and fixtures, net | 
                                                114,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                311,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                333,144,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Goodwill | 
                                                14,354,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,357,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Trademark right | 
                                                721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Software | 
                                                208,817,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                210,684,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                16,792,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                535,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                535,611,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                39,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments in capital | 
                                                18,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                236,639,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                240,965,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                17,703,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,842,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                1,115,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                996,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                7,047,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,156,888,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                305,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                170,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                6,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                24,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,631,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,388,672,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Asset retirement obligations | 
                                                102,296,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                102,296,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,733,403,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,475,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,154,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,150,539,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                1,160,445,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,134,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                3,630,469,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,071,610,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -631,316,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -675,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                5,314,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,681,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                5,314,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,681,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                7,047,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,156,888,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |