Board Thread:Questions and Answers/@comment-81.151.75.176-20130224144137/@comment-26871105-20160510153414

Crazy Diamon can not "fix" and revert changes that are along the lines of absorptions/fusion and mutations caused by those or maybe other reasons, because they are not considered "damanged". The best Josuke can do in terms of reversing something would be putting shattered/injured thing/person(if they haven't died) back together and un-doing chemical effects.