Quarterly Consolidated Balance Sheet
| Concept | As at 2023-11-30 | As at 2023-02-28 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,036,842,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,646,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Inventories | 
                                                399,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,384,417,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -616,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -613,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                1,702,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,229,019,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                21,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,901,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | ||
| Intangible assets | 
                                                172,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                6,607,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Non-current assets | 
                                                200,168,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                135,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                1,902,540,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,364,476,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                545,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                270,603,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                581,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Asset retirement obligations | 
                                                7,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                20,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                291,462,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                605,162,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                401,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                401,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                389,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                389,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                821,066,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,969,301,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                1,611,078,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,759,313,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                1,611,078,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,759,313,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                1,902,540,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,364,476,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |