It belonged to Ed Maloney at the California Air Museum (later, Planes of Fame). Maloney managed to get it airworthy. It was sold to a Japanese museum when Maloney needed cash. It wasn't popular at air shows, and the cash was needed. Unfortunately, the buyer didn't bother to ask Nakajima how to remove the wings to transport it through narrow Japanese streets. So, they cut off the wings with power tools. Later, they were reattached and reinforced. However, the Hayate was destined never to fly again.
This video was made from 8mm film shot around 1965, give or take. It shows the Ki-84 being flown, along with a P-26 and a P-51 that made a landing with the wheels up (mostly). No sound, but still worth watching....
https://www.youtube.com/watch?v=8waXqQoBri4