Hiura should of been looking up "how to practice gay sex" or "how to stretch yourself for anal sex" instead he goes for kissing. Either that, or he already practices loosening up his asshole in preparation for Midou.
Sadly, we'll never know unless the author makes a R18 chapter. Which I would totally be down for, especially if it was canon. The amount of homo sex they could have, ugh. We're missing out on so much.
Finding a series that has canon R18 chapters as there own thing is uncommon. When the series isn't labeled as so. I normally only see the sub 5 page self published series have some.
I do wonder if they'll use lube, Midou's tongue, or nothing when they do decide to fuck.
I know some people get appalled by Rimmies, but, in trap hentai, it's pretty hawt. Unless you're reading a Chinzurena doujin, expect the worst.
Thanks for the TL btw