Japanese do have shinjitai characters which are also simplified, but differently, although there are definitely fewer such characters than in Simplified Chinese

Japanese do have shinjitai characters which are also simplified, but differently, although there are definitely fewer such characters than in Simplified Chinese. My favorite is the simplification of 龍 (dragon) - in Simplified Chinese, they took the right hand side and derived 龙; in Japanese Shinjitai, they took the left hand side and obtained 竜.