3 decal variants:
1. Ki-61 I Hei, 244th Sentai, Chólu airbase, Japan, August 1945
2. Ki-61 I Hei, 18th Sentai, Lt. Mitsuo Cykel, Kashiwa ab. Japan, Jan 1945
3. Ki-61 I Hei, 56th Sentai, Japan, 1945
In total, over 3,000 pieces of all variants were produced. The Ki-61 I Hei was produced in parallel with the Otsu version, the wing cannons were replaced with German Mauser MG 151/20. A total of 388 units of this version were produced from September 1943 to July 1944.