Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | 
                                                288,067,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                274,396,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and deposits | 
                                                97,746,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                10,712,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -346,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Land | 
                                                15,988,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                261,725,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                220,590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                44,967,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,571,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -393,279,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -372,502,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Own-used assets | ||
| Tools, furniture and fixtures | 
                                                41,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,483,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                1,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,663,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,663,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other intangible assets | ||
| Investments and other assets | ||
| Investment securities | 
                                                1,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,447,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                5,105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                3,687,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,458,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -99,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -92,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                268,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                229,066,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Current assets | ||
| Merchandise and finished goods | 
                                                30,334,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,695,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                43,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,885,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                23,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,234,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | ||
| Assets | 
                                                556,688,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                503,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | ||
| Non-current liabilities | 
                                                160,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                84,222,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                18,444,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,359,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                78,158,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                4,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                609,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,550,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                34,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,152,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                238,570,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                184,984,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                296,349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                303,829,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                33,575,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,575,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                49,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,908,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                226,264,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                233,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -13,411,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -13,457,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                20,820,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                659,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                631,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                947,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                958,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                318,117,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                556,688,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                503,462,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Current portion of long-term borrowings | 
                                                9,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,958,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                2,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Provision for bonuses for directors (and other officers) | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Provision for retirement benefits for directors (and other officers) | 
                                                45,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Net assets | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings | ||
| Valuation and translation adjustments |