3 decal variants:
1. Ki-100 II, No.3 Kawasaki aircraft GIFU factory, August 1945
2. Ki-100 II, 55th Sentai, Japan 1945 /alternate marking/
3. Ki-100 II, 244th Sentai, Japan 1945 /alternate marking/
A total of 99 of this version was built before production was brought to an end by the growing weight of USAAF air attacks. A more effective version had been planned, to be powered by the Mitsubishi Ha-112 engine which incorporated a turbocharger to improve high-altitude performance, but only three of these Ki-100-II prototypes had been built and flown by the end of the war.