Quarterly Balance Sheet
| Concept | As at 2024-06-30 | As at 2024-06-30 | As at 2024-06-30 | As at 2024-06-30 | As at 2024-06-30 | As at 2024-06-30 | As at 2024-06-30 | As at 2024-06-30 | As at 2024-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2023-06-30 | As at 2022-06-30 | As at 2022-06-30 | As at 2022-06-30 | As at 2022-06-30 | As at 2022-06-30 | As at 2022-06-30 | As at 2022-06-30 | As at 2022-06-30 | As at 2022-06-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Quarterly balance sheet | |||||||||||||||||||||||||||
| Balance sheet | |||||||||||||||||||||||||||
| Assets | |||||||||||||||||||||||||||
| Current assets | |||||||||||||||||||||||||||
| Cash and deposits | — | — | — | — | — | — | 
                                                1,888,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,617,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current assets | — | — | — | — | — | — | 
                                                2,308,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                2,067,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current assets | |||||||||||||||||||||||||||
| Investments and other assets | — | — | — | — | — | — | 
                                                124,389,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                18,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Investments and other assets | |||||||||||||||||||||||||||
| Long-term prepaid expenses | — | — | — | — | — | — | 
                                                29,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other | — | — | — | — | — | — | 
                                                94,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                18,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Non-current assets | — | — | — | — | — | — | 
                                                124,389,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                18,335,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Assets | — | — | — | — | — | — | 
                                                2,432,855,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                2,085,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Liabilities | |||||||||||||||||||||||||||
| Current liabilities | |||||||||||||||||||||||||||
| Income taxes payable | — | — | — | — | — | — | 
                                                45,282,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                44,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Current liabilities | — | — | — | — | — | — | 
                                                91,988,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                153,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Liabilities | — | — | — | — | — | — | 
                                                91,988,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                153,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net assets | |||||||||||||||||||||||||||
| Shareholders' equity | |||||||||||||||||||||||||||
| Share capital | — | — | — | — | — | — | 
                                                7,585,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                6,777,556,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Capital surplus | — | — | — | — | — | — | 
                                                7,572,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                6,764,406,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Retained earnings | — | — | — | — | — | — | 
                                                -12,853,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -11,643,499,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Treasury shares | — | — | — | — | — | — | 
                                                -401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -392,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Shareholders' equity | — | — | — | — | — | — | 
                                                2,304,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,898,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Share acquisition rights | — | — | — | — | — | — | 
                                                36,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                34,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net assets | 
                                                7,572,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,572,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,853,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,585,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,340,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,853,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,304,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,777,556,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,643,499,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,932,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,764,406,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,643,499,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -392,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,764,406,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,898,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,399,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,273,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,399,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,688,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,286,327,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,273,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | — | — | — | — | — | — | 
                                                2,432,855,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                2,085,999,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — |