Semi-Annual Consolidated Balance Sheet
| Concept | As at 2025-03-31 | As at 2024-09-30 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,283,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,526,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                79,419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                321,385,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                3,358,430,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,484,994,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                205,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | ||
| Goodwill | 
                                                31,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                32,057,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                334,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Other | 
                                                134,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -37,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -37,970,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                571,787,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                383,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                3,930,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,868,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                150,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,951,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                160,524,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                264,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                958,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,099,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Retirement benefit liability | 
                                                103,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                25,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                128,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                126,512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,086,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,225,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                80,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses for directors (and other officers) | 
                                                16,237,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                277,980,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                277,980,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                242,585,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                242,585,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                2,322,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,122,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                2,843,468,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,642,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                2,843,468,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,642,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                3,930,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,868,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |