Board Thread:Questions and Answers/@comment-78.0.35.211-20140105000249/@comment-5426290-20141225130317

You are mostly right about that, I was confused with the affects of the prisoner fruit.

[The body changes to become more healthy and durable so that it's convenient for sex, but it's rare for the appearance to change greatly other than that.]

[most men who become an incubus will have their penis grow larger by leaps and bounds]

[''Just like monsters, their appearance stops aging at a certain stage. It could be as a boy, as a young man, or as a mature man.'']

http://monstergirlencyclopedia.wikia.com/wiki/Monsters#Mental_and_Physical_Changes_Caused_by_Incubization