Shareholdings
| Concept | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|
| Shareholdings | ||||||
| Reporting company | ||||||
| Details of specified investment shares held for purposes other than pure investment | ||||||
| Issue | 
                                                ㈱みずほフィナンシャルグループ
                                                
                                             | 
                                                ㈱藤商事
                                                
                                             | 
                                                ㈱大垣共立銀行
                                                
                                             | — | — | — | 
| Number of shares | 
                                                1,157
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                290,800
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                290,800
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,157
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,500
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Carrying amount | 
                                                3,524,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                394,906,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                440,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,465,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Purpose of shareholding, overview of business alliance, quantitative effects of shareholding and reason for increase in number of shares | 
                                                (保有目的)安定的な資金調達等の金融取引の関係強化。(定量的な保有効果)(注)
                                                
                                             | 
                                                (保有目的)エンターテインメント分野における企業間取引強化。(業務提携等の概要)エンターテインメント分野における遊技台の企画・開発力を向上させるため。(定量的な保有効果)(注)
                                                
                                             | 
                                                (保有目的)安定的な資金調達等の金融取引の関係強化。(定量的な保有効果)(注)
                                                
                                             | — | — | — | 
| Whether issuer of aforementioned shares holds reporting company's shares | 
                                                無
                                                
                                             | 
                                                有
                                                
                                             | 
                                                無
                                                
                                             | — | — | — |