Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Non-current assets | 
                                                257,443,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,366,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                7,686,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,904,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                15,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                233,773,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                231,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investment securities | 
                                                21,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Guarantee deposits | 
                                                156,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                153,537,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                56,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -8,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                8,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Current assets | ||
| Cash and deposits | 
                                                1,356,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,435,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Prepaid expenses | 
                                                56,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Supplies | 
                                                5,995,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,847,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                53,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,611,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                20,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                1,864,173,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,124,981,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Intangible assets | ||
| Investments and other assets | ||
| Other assets | ||
| Deferred assets | 
                                                2,138,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Bond issuance costs | 
                                                2,138,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred assets | ||
| Assets | 
                                                2,123,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Other assets | — | — | 
| Liabilities and net assets | ||
| Non-current liabilities | 
                                                382,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                427,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Bonds payable | 
                                                104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                63,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                792,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,096,726,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - trade | 
                                                159,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                290,808,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                350,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                530,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - other | 
                                                33,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                4,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Advances received | 
                                                27,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accrued consumption taxes | 
                                                28,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                24,651,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,175,113,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,524,302,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                947,849,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                852,835,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                55,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                201,582,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                732,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                802,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                166,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -145,038,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -6,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                793,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                793,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                948,642,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                853,697,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                2,123,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Current portion of bonds payable | 
                                                64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current portion of long-term borrowings | 
                                                100,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term accounts payable - other | 
                                                133,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                133,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Net assets | ||
| Valuation and translation adjustments | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings |