Balance Sheet
| Concept | As at 2024-04-30 | As at 2024-01-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,282,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,318,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                282,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                287,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                438,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                418,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                151,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                162,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -2,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                41,406,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,934,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                2,579,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,583,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Land | 
                                                1,715,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,715,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                2,059,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,021,521,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets, net | 
                                                24,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                58,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                6,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Own-used assets | ||
| Leased assets | — | — | 
| Intangible assets | ||
| Intangible assets | 
                                                45,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                51,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,946,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                53,551,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term prepaid expenses | 
                                                1,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,275,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                2,158,296,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,114,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Other assets | ||
| Assets | 
                                                4,737,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,697,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Accrued expenses | 
                                                66,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,431,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                5,326,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Unearned revenue | 
                                                5,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                21,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                174,341,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                202,019,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                38,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Non-current liabilities | ||
| Non-current liabilities | 
                                                710,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                715,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                4,677,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                20,942,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                340,532,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                337,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                885,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                917,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Deferred tax liabilities for land revaluation | 
                                                204,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                204,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                3,265,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,275,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,966,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                1,056,422,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,054,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                312,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                341,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -70,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -87,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                586,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                503,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                5,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Revaluation reserve for land | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                3,852,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,780,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                4,737,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,697,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Valuation and translation adjustments | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings |