Quarterly Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,544,459,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,435,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                37,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                26,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                34,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                3,347,038,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,683,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                57,018,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | 
                                                16,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Investments and other assets | 
                                                270,606,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,342,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Non-current assets | 
                                                344,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                158,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                3,691,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,842,109,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                33,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                121,357,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                428,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                700,031,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Asset retirement obligations | 
                                                18,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                18,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                446,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                717,957,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,838,882,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,838,882,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                1,858,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,858,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                -454,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -575,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -2,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                3,240,895,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,120,161,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                1,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                4,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                3,245,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,124,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                3,691,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,842,109,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |