What kind of manga is about a guy with a perfect butt?

It could be a manga that focuses on the guy's adventures and experiences related to his unique fetish.

I think it could be a strange and unconventional cartoon with a character designed in a peculiar way. Maybe for some kind of unique or comical effect.

It could be a comical scene in a slapstick cartoon, showing some sort of prank or unexpected event.

A perfect anime guy in manga often has good looks, a charming personality, and strong skills or powers.

I'm not entirely sure as the name is rather strange and specific. It could potentially be a fan - created fictional work related to a character named Asriel, perhaps with some connection to MS Paint and an odd or humorous take on the idea of a 'butt' in the context of the fanfic. But without actually reading it, it's hard to say precisely.

It could be a fighting manga where the super macho guy takes on tough opponents.

Maybe it's a mystery manga where the guy follows the girl to solve a puzzle or uncover a secret related to her.

It might be a romance manga where the unusual name plays a role in his relationships. Or perhaps it's a mystery manga where his name is somehow connected to a hidden secret.

It could be a manga that focuses on the guy's moral struggle or internal conflict about not harming the girl. Maybe there's some external pressure or temptation pushing him to do it, but he resists.

There are different possibilities. It could be a fantasy manga where their love story is intertwined with magical elements. Or perhaps a school-life manga centered around their daily interactions at school.