Thanks for the summary, but i think it's too early to tell if Dohyun was a complete jerk or not, we haven't gotten to the cause of Sungho's scar. And the memories hasn't been completed yet. Sure at this time nothing Sungho's done is justifiable, instead he looks so sick in head. But let's say Sungho was also raped (or even worse gang-raped), got the scar, and Dohyun was the cause, then the vengeance here isn't that nonsense imho
i dont know i dont think he raped him,after reading Sengho's diary and concluding that whats he is doing to him is revenge,he thinks to himself that Sengho didnt have to agree to sleep to him if he didnt want to.but i dont know,maybe he doesnt remember it? but i doubt you could rape someone and forget it? :/ Dohyun doesnt seem the rapist type,wasnt he trying to help a girl who was hit on by men in his flashbacks.
SPOILERS
in the recent chapters Dohyun started complying with sengho,NOT because he has feelings for him or is broken,he found in Sengho's diary a record of (i think 11) sexual encounters between them in the past,so he thinks that if he lets him get it over with his revenge he will let him go.thats what Dohyun concluded,although i dont believe Sengho will let him go but we will have to wait and see.in one of the chapters he made Dohyun give him a blowjob after getting it done,Dohyun's keeps thinking to himself"only 8 times left",i think by now only six times are left? this is all from Dohyun's perspective,we still dont know the seme's motives.
two guys are keeping taps on Sengho,this is my speculation but i think they are sent by the guy who Sengho works for(i think they are some shady people and not the police).in one of the chapters the dude Sengho works for asks if Sengho is busy and that he hasnt been in much contact lately but he brushes it off since Sengho is doing his job well,but i think they guy sent these guys to see what Sengho is up to.
NOW,i hope the new guys interfere with Sengho and help the uke break free,i mean sure he was a jerk and a player when he was a kid,probably hurt Sengho's feelings BUT whatever he did with Dohyun,he did it willingly,Dohyun didnt force himself on him.he was hesitant but HE DID IT WILLINGLY.i mean am surprised people say the uke brought it to himself but kidnapping someone,keeping them hostage,raping and beating them is a lil bit too extreme as a payback for a heartbreak,dont you think? the seme seems off even when he was a kid he seemed a lil bit off too.