Very confusing

After founding about the twin theory I stalked the raws and screenshot translated everything to figure it out. It’s the normal jealous obsessive twin situation where the older brother wanted to do everything for the younger brother (Hajun) and is crazy, not letting Hajun have friends and wants them to share one life, after the mom passes away they are split up and Hajun goes to college and the older goes to work, Hajun hates the brother thinks he’s weird and the brother thinks Hajun ran away and stalks him at school. Danwoo gets with Hajun and that’s when the older one starts following them and the first time he switches is when he picks up for Danwoo for a date in the suit— and basically anytime they had crazy sex it was him. Danwoo finds out by the older brother taking him to the wrong hotel, gets mad beats him up and now recent chapter he just told Hajun he slept with his twin by accident even though it was actual rape. I have a bad feeling Hajun knew the whole time and didn’t care but we’ll see.