Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                65,884,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,965,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                501,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                14,737,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,109,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                348,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                212,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                5,540,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,277,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                123,798,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                126,725,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                86,938,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                51,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                1,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,617,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Investment securities | 
                                                13,038,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,815,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                33,418,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                20,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,951,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Intangible assets | ||
| Investments and other assets | ||
| Other assets | ||
| Assets | 
                                                210,737,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                206,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | ||
| Non-current liabilities | 
                                                6,287,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,360,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,921,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                31,216,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,514,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                1,800,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                669,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                6,793,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                37,504,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,875,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                168,421,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                160,266,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                4,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                21,887,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,887,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                162,302,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -20,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                4,811,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,781,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                4,256,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,395,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                173,232,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,047,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                210,737,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                206,922,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Provision for bonuses | 
                                                1,568,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,953,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Non-current liabilities | ||
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Net assets | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings | ||
| Valuation and translation adjustments |