So this guy right here can actually eat demons in canon and he sorta absorbs their abilities for an unknown period of time.

If I were to app him would that be okay to still have that ability if I put some restrictions on it? Like say he eats an akayashi that has water powers or something. From the moment he does consume said demon he actually takes on slight appearances of what the demon looked like and their powers as well. I'd make it so that he only kept those powers for at most a month or less. Would that be okay or?!