I dropped this so long ago cause the plot is everywhere wtf Yall mean incest?

It's not
They not blood related (￣(ｴ)￣)

Everything else well... not a comfort CP for sure
╮(￣▽￣)╭

It's incest, dude got with his adopted brother.
The adopted brother was adopted before the guy he's in love with was born. They grew up together in the same household, with the same parents as brothers. If that's not incest, then adopted parents aren't real parents.