This is a Ki-61-1a Hien Army Type 3 Fighter, Serial No. 2210, at Yakota Air Base (pre 1947, after 47 it got fake American markings) Japan. The Tony was returned in 1953 to the Japanese people through civilian representatives of the Japan Aeronautic Association (Nippon Kohkuh Kyohkai). They moved it to Hibiya Park in Tokyo near the Imperial Palace for display.
See first page of this thread for more pictures and info on this one.