I think that you should go with sunbae and getaway from his "brother" since hyung is so close with him. I think since he has complications with his "brother" being with someone who sees him everyday and is an extremely bad influence is toxic and he should be with someone closer to his age and life stage.
If that makes sense






Imagine going in to clean the room and theres hand/face/chest smudges all over the mirror
i would quit