Who will the relationship be with? Who is supposed to be on the cover?

Yaba (real name Sejin), black hair, is the MC.



Spoiler-
Yaba thinks he is f@t but in reality he isn't. He's mentally unstable.

Chap 10, page 28
Chap 10, page 29, his real 'thin' body shown on the mirror

Thank you. I was a little confused about that.

who will be the ML? the whole story is so confusing

Chap 10, page 1
Chap 11

MC is a super unreliable narrator so his POV can be confusing, but it comes together.