Board Thread:Contact the Moderators/@comment-35632063-20180519180647/@comment-28245851-20180523162142

As said in our Rules and Guidelines:
 * Fanart in articles or galleries is not permitted, except if it has been drawn by franchise contributor such as a Danganronpa crew member, voice actor, or manga illustrator.

So no, we wouldn't make any pages for doujins. And to answer your second question, yes we would need to ask for permission if we were going to (we're not) because Japan has different laws with copyright as well as monetary gain (such as if you need to buy the doujin). This is is just further reason we won't likely ever bother with pages like it.