Of course everything is possible, but as far as the given content goes, obession is what's evident with Seungbae, as of now. Perhaps he might go insane with his Sangwoo obsession ┑( ̄Д  ̄)┍. But as of now, your prediction is a bit far fetched, but the possibility is there.
I hope he stays sane since there should be at least one normal guy in the cast just for some balance. We already have Sangwoo and Bum.
the writer be wrapping us readers around her finger
What if Seungbae is also bad?? Like hes also a sociopath in a way?? Seeing as how SK is, Im expecting alot of plots twists ahead(〜 ̄△ ̄)〜