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 | 
                                                972,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                528,651,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                63,106,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,582,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,202,612,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                1,953,044,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,635,687,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                161,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                172,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | ||
| Goodwill | 
                                                153,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                184,523,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                39,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                257,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                315,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                360,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                658,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                27,127,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,048,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                23,934,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                21,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                779,230,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,146,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                2,732,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,782,507,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                850,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                55,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                117,287,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,891,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,619,854,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,177,722,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Bonds payable | 
                                                300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                362,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                689,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                252,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                2,309,651,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,430,036,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                27,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                484,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                484,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                484,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                -673,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -739,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -32,739,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -32,739,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                262,906,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                197,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                3,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,476,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                3,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,476,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                156,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                150,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                422,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                352,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                2,732,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,782,507,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |