Major Shareholders
| Concept | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| Major shareholders | |||||||||||
| Major shareholders | |||||||||||
| Name | 
                                                加藤 香菜実
                                                
                                             | 
                                                浅野 利広
                                                
                                             | 
                                                鶴田 亮司
                                                
                                             | — | 
                                                黄 俊利
                                                
                                             | 
                                                アクセスアジア株式会社
                                                
                                             | 
                                                江川 源
                                                
                                             | 
                                                河田 敏秀
                                                
                                             | 
                                                大阪鋼圧株式会社
                                                
                                             | 
                                                江川 麗子
                                                
                                             | 
                                                中原証券株式会社
                                                
                                             | 
| Address | 
                                                大阪市鶴見区
                                                
                                             | 
                                                山形県山形市
                                                
                                             | 
                                                東京都大田区
                                                
                                             | — | 
                                                千葉県浦安市
                                                
                                             | 
                                                埼玉県戸田市喜沢南2丁目6-28
                                                
                                             | 
                                                東京都品川区
                                                
                                             | 
                                                東京都文京区
                                                
                                             | 
                                                大阪市大正区泉尾6丁目1-25
                                                
                                             | 
                                                東京都品川区
                                                
                                             | 
                                                東京都中央区日本橋室町4丁目4-1
                                                
                                             | 
| Number of shares held | 
                                                1,604,400
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,354,300
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,200,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                55,935,700
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,600,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                34,059,400
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                3,300,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,564,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                1,600,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,593,600
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                2,060,000
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Shareholding ratio (excluding treasury shares) | 
                                                0.0094
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0138
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0129
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.3286
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0211
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.2002
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0194
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0150
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0094
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0152
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.0121
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |