Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,006,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,750,184,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                350,445,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                457,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                5,758,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,153,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                319,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                234,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | ||
| Intangible assets | 
                                                241,648,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                284,507,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                656,059,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                537,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Deferred tax assets | 
                                                245,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,921,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                99,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                103,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -3,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                1,216,980,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,056,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                6,975,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,209,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                137,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                264,602,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                182,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                185,126,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,386,928,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,586,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                35,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,421,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,643,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                81,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                101,112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,037,128,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,037,128,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                1,020,753,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,020,753,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                3,833,976,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,747,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -285,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -319,237,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                5,605,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,486,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                17,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,694,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                -70,223,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,757,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                -52,332,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,451,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                5,553,611,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,566,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                6,975,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,209,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |