Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-07-31 | As at 2024-01-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,259,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,318,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                22,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,934,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -2,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                2,566,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,583,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                2,146,729,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,021,521,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                148,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                151,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                106,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                1,715,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,715,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets | — | — | 
| Leased assets, net | 
                                                28,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                142,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                6,231,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                48,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                57,675,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                55,585,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,946,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                2,252,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,114,375,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                4,819,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,697,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                65,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                11,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                20,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                202,418,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                202,019,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Retirement benefit liability | 
                                                3,751,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,864,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                25,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                719,148,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                715,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                921,566,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                917,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                343,431,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                337,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                35,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                6,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities for land revaluation | 
                                                204,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                204,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| 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 | 
                                                268,439,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                341,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -70,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -87,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                3,220,787,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,275,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                8,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Revaluation reserve for land | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                356,552,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                189,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                676,248,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                503,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                3,897,649,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,780,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                4,819,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,697,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |