Board Thread:General Discussion/@comment-25156739-20150914163822/@comment-26871105-20160617055123

Crazy Diamond can't revert someone's age, since growing/aging is not considered an injury or a wound/damage.

It could only restore something back to its previous state if something that could be considered as "damage" is involved. "Damage" could involve a variety amount of things, such as cutting, bashing, chemical reactions, fire and explosions etc, but it does however, not involve growing/aging because it's not foundamentally considered as a damage literally or scientifically.

Reverting age however, is something Alessi's Sethan could do. All you need to do is being exposed to its touch for 10 seconds in total to revert back to a fetus, and it's pretty darn OP for a number of reasons as outside of its age reversal it also regress your mental capabilities, memories and mental power/Stand power. On top of the fact you can't actually fight Sethan since any contact with it would regress your age, and that it's bound to Alessi's shadow meaning you can't harm the user by attacking Sethan in the first place. It's very ideal for sneak attacks.

However when compared to nightmarish nonsense such as GER, it still pales by comparison.