Semi-Annual Consolidated Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,643,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,161,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                10,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                2,109,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,568,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                66,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | 
                                                4,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -356,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -161,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures, net | 
                                                4,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                10,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                125,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Deferred tax assets | 
                                                114,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                6,011,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                201,545,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                104,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                2,311,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,672,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                4,714,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                4,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                496,671,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                607,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                104,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                114,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                104,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                114,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                601,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                722,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Share capital | 
                                                815,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                788,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | 
                                                799,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                772,972,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                95,032,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                388,429,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                1,710,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,950,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                1,710,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,950,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                2,311,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,672,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |