- Outside Audit & Supervisory Board Member, SBI Shinsei Bank, Limited
 - Outside Director, Mitsubishi UFJ Securities Holdings Co., Ltd.
 - Outside Audit & Supervisory Board Member, Toyo Seikan Group Holdings, Ltd.
 - Outside Director, Nippon Kayaku Co., Ltd.
 - Outside Audit & Supervisory Board Member, BROTHER INDUSTRIES, LTD.
 - Outside Director, TOP'S Inc.
 - Outside Audit & Supervisory Board Member, iCARE Co., Ltd.
 
 
As of August 19, 2025
|  
                     June 2025  | 
                                 
                     Outside Audit & Supervisory Board Member, BROTHER INDUSTRIES, LTD. (Current)  | 
                        
|  
                     June 2023  | 
                                 
                     Outside Director, Nippon Kayaku Co., Ltd. (Current)  | 
                        
|  
                     April 2023  | 
                                 
                     Outside Audit & Supervisory Board Member, iCARE Co., Ltd. (Current)  | 
                        
|  
                     June 2022  | 
                                 
                     Outside Director, Mitsubishi UFJ Securities Holdings Co., Ltd. (Current)  | 
                        
|  
                     June 2020  | 
                                 
                     Outside Audit & Supervisory Board Member, Toyo Seikan Group Holdings, Ltd. (Current)  | 
                        
|  
                     June 2020  | 
                                 
                     Outside Director, CAWACHI LTD.  | 
                        
|  
                     July 2019  | 
                                 
                     Board of Directors, The Japanese Institute of Certified Public Accountants  | 
                        
|  
                     June 2019  | 
                                 
                     Outside Audit & Supervisory Board Member, SBI Shinsei Bank, Limited (Current)  | 
                        
|  
                     April 2019  | 
                                 
                     Senior Researcher, Management Training and Consulting Division, Institute of Management, SANNO University  | 
                        
|  
                     August 2018  | 
                                 
                     External Director, TOP'S Inc. (Current)  | 
                        
|  
                     December 2010  | 
                                 
                     Chief Researcher, Management Training and Consulting Division, Institute of Management, SANNO University  | 
                        
|  
                     January 1995  | 
                                 
                     Joined Showa Ota & Co. (Predecessor of Ernst & Young ShinNihon LLC)  |