Semi-Annual Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                10,734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,659,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,851,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                62,428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,780,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                34,581,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Tools, furniture and fixtures | 
                                                11,856,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,547,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -11,018,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,822,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Tools, furniture and fixtures, net | 
                                                838,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                725,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                20,490,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,490,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                330,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                1,947,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,947,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                1,699,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                4,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,828,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term loans receivable | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                629,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                832,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                40,532,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                102,961,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,322,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                2,130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,990,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                533,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,314,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,428,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                24,874,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,015,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                18,228,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,847,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                850,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                43,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,862,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for bonuses | 
                                                2,009,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,067,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                1,430,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Share capital | 
                                                8,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | ||
| Capital surplus | 
                                                7,408,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,408,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                39,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -458,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                54,049,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                285,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                70,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                509,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                59,858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,460,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                102,961,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,322,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |