Statement Of Changes In Equity
| Concept | As at 2021-03-31 | 2020-10-01 to 2021-03-31 | As at 2020-09-30 | 2019-10-01 to 2020-03-31 | 
|---|---|---|---|---|
| Statement of changes in equity | ||||
| Statement of changes in equity | ||||
| Net assets | 
                                                1,780,336,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,709,388,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Changes during period | ||||
| Profit (loss) | — | 
                                                -169,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -266,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |