Semi-Annual Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                668,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                533,031,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Inventories | 
                                                1,722,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,853,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                42,662,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -2,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,901,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                5,267,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,401,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                2,581,135,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,529,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                2,100,782,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,100,859,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                98,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                11,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investments and other assets | 
                                                326,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                329,012,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -7,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                2,919,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,872,368,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                8,187,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,273,419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                2,730,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,983,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                57,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                109,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                223,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                123,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                3,969,338,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,222,641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                1,840,384,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,982,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                1,076,605,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,240,019,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                85,995,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                66,602,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                5,809,723,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,204,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for bonuses | 
                                                46,225,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities for land revaluation | 
                                                565,868,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                565,868,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Share capital | 
                                                500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | ||
| Capital surplus | 
                                                226,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                226,399,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                546,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                244,570,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -5,277,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,173,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                1,267,779,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                965,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                39,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Revaluation reserve for land | 
                                                1,036,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,036,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                1,084,591,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,084,753,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                2,377,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,068,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                8,187,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,273,419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |