[quote=@Sho Minazuki]
Sounds okay, though I would say it's less of someone he can be less cautious around, and more of this strange friendship where he can just be more tolerated, since he can be quite insulting at times, sneaking in subtle insults in his dialogue sometimes.

Though for a strange friendship, they would also have had to have met on strange terms.
[/quote]

Strange terms, hmm...

Hisaki's uncle did that thing parents/guardians do when they give invites to the whole class. Ayumu was the only one who showed up/stayed. He also ate half the cake.

Ayumu was looking to research the art of 'being thug' and went to the most convenient, least-inclined-to-beat-him-up-for-fun person he knew of.

They were groupmates in a class project that nobody ever speaks of. There's nothing particularly weird or sinister about it; they just don't.

They frequent the same seafood restaurants. One day they independently visit a newly-opened restaurant. They get hospitalized for severe food poisoning and end up sharing a room. 

Or something. idk. It's super late and I just got home so I'm not running at 100% rn.