User blog comment:Karina Frost/MGE x RPG Maker VXA/@comment-25035274-20150819134243/@comment-25035274-20150820140132

Well, if your character's a male he wouldn't turn into another species, anyway. He'd just be an incubus. If a female, well...

I don't think mamono are limited to what they can eat, really, so locking food choices would seem a little harsh.

EDIT: Also, to be honest I actually 'do' think there should be a point of no return. As far as I can tell, lore-wise, becoming an incubus or mamono is preeeeeeeeetty darned permanent.