Quarterly Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-09-30 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,341,394,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,136,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                364,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                364,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                12,540,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                2,843,577,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,617,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Investments and other assets | 
                                                1,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Non-current assets | 
                                                1,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                2,844,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,618,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                13,123,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,901,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                93,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                209,054,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Asset retirement obligations | 
                                                2,305,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,305,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                389,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                387,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                483,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                596,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                354,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                3,352,566,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,095,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                -1,355,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,185,981,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -75,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -75,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                2,351,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,007,006,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                9,865,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                2,361,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,021,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                2,844,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,618,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |