Had me wondering about that, so did a little research.
RAF Cosford has a couple of Japanese aircraft. A Kawasaki Ki-100 and Mitsubishi Dinah. Been a couple of years since I’ve been. I remember the Dinah but couldn’t think of what the other one was!
Hendon currently has no Japanese aircraft on display, but given the amount of swapping between the two sites, the Ki-100 could have been there at one point.
At some point I really must visit Hendon looking at what they have. Just rarely venture into that part of the country.
Your build is looking great. It’s going to be very impressive when it’s finished.