Ok so who was the top that was screwing sunbae was it ml or minhyuk????so damn confused

It's the brother i think; same white t shirt that he wore beginning of chapter then we see it with the guy at end of chapter =<

I really don’t think it’s the brother.

In the author's note minhyuk was also mentioned so there is a very high chance it's him

Also, I feel like the little bro is so deeply obsessed with Mc. To the point of not having add with anyone else.