Tachikawa Ki-54 <i>Otsu. </i>Gunnery and R/T trainer
Kugisho R2Y1 <i>Keiun </i>(beautiful cloud) Twin engine single propellor. No Allied code name, as it was destroyed before the Allies knew of it’s existence
Mitsubishi L3N Transport version of the G3M “Nell”
Nakajima Ki-87 Prototype high altitude supercharged interceptor. No Allied code name AFAIK.
Ha-Go IJA autogyro