Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                944,059,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                937,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts receivable - trade | 
                                                122,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Prepaid expenses | 
                                                37,097,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,302,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                1,106,653,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,152,269,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                26,396,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,206,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Own-used assets | ||
| Tools, furniture and fixtures | — | — | 
| Tools, furniture and fixtures, net | 
                                                18,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,396,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Software | 
                                                59,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                114,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other intangible assets | ||
| Investments and other assets | ||
| Investment securities | 
                                                7,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments in capital | 
                                                25,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                76,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                102,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                28,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                14,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                217,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                208,418,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Deferred assets | ||
| Deferred assets | 
                                                471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share issuance costs | 
                                                471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,885,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | ||
| Assets | 
                                                1,324,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,362,572,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Other assets | — | — | 
| Liabilities | ||
| Current liabilities | ||
| Accounts payable - trade | 
                                                49,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - other | 
                                                8,135,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current portion of long-term borrowings | 
                                                17,570,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accrued expenses | 
                                                14,633,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                13,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                36,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,184,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Contract liabilities | 
                                                89,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                115,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                266,368,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                305,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accrued consumption taxes | 
                                                14,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,774,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                23,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,708,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Non-current liabilities | ||
| Non-current liabilities | 
                                                3,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,264,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                3,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                270,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,585,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                1,054,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,047,987,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                1,360,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,360,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                200,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Legal capital surplus | 
                                                200,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                -506,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -512,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other retained earnings | — | — | 
| Retained earnings brought forward | 
                                                -506,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -512,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                1,054,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,047,987,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                1,324,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,362,572,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings | ||
| Other retained earnings |