Treasury Shares, Etc.
| Concept | As at 2025-03-31 | As at 2025-03-31 | 
|---|---|---|
| Treasury shares, etc. | ||
| Treasury shares, etc. | ||
| Name of shareholder | — | 
                                                科研製薬株式会社
                                                
                                             | 
| Address of shareholder | — | 
                                                東京都文京区本駒込2-28-8
                                                
                                             | 
| Number of shares held in own name | 
                                                7,442,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                7,442,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Number of shares held in others' names | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Total number of shares held | 
                                                7,442,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
                                                7,442,200
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             | 
| Shareholding ratio | 
                                                0.1620
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.1620
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             |