Research And Development Activities
| Concept | 
                                    
                                        2021-01-01 to 2021-12-31  | 
                            
                        
|---|---|
| Research and development activities | |
| Research and development expenses | |
| Research and development expenses | 
                                        
                                             
                                                1,390,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     |