Consolidated Balance Sheet
| Concept | As at 2024-04-30 | As at 2024-01-31 | 
|---|---|---|
| Consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,366,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,183,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                26,541,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Prepaid expenses | 
                                                42,308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,031,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                38,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                2,273,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,393,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                863,611,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                860,024,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                826,815,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                823,632,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investment securities | 
                                                409,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                404,815,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -102,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -102,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                518,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                520,868,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                35,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                1,600,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,701,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Assets | 
                                                3,137,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,253,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                16,566,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,557,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - other | 
                                                302,805,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                239,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Provision for bonuses | 
                                                52,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,639,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                90,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                603,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                694,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Retirement benefit liability | 
                                                125,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                123,886,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                126,256,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                124,336,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                729,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                819,308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                2,258,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,301,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                412,902,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                412,902,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                510,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                510,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                2,394,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,437,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -1,060,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,060,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                69,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,949,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                69,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,949,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                80,864,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,239,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                2,408,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,434,308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                3,137,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,253,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Valuation and translation adjustments |