Seme was blackmailing uke when he saw he was fucking another guy (he planted the camera in their room). Apparently he is obsessed with this guy since they first met because he treated him with unvolontary contempt and got so jealous they think he went to kill the guy uke was fucking with by pushing him off a bridge. He then got rid of the other who was clinging to uke by making them fight. The guy who seme pushed though, was sussing him out and most likely sent the police on him right when seme and uke were fucking. He was found guilty of attempted murder and rape (thought they hint that maybe it wasn't him at pushing the guy off) and he was in prison for 9 years. In the latest chapter 10 years have passed and uke moved to Seoul and he went to this gay bar where this guy drugs his drink to take him to a hotel. Right when he was about to get raped, a bunch of man in suits come to rescue the uke... and that's so far, let me know if you want me to elaborate in some parts lol
I’m totally lost