That is not forced. Dohyun wanted; Sungho didn't; Dohyung moved away; Sungho used sex to keep Dohyun near him. He did it reluctantly, but he made the choice. (At least in the flashbacks we've seen; something may have happened later we haven't seen.)
If you can walk away, it's not forcible rape.
From Dohyun's perspective, someone changed his mind.
From Sungho's perspective, he needed to give sex to get time with Dohyun.
Each got something they wanted, but unless we see from Dohyun's POV that he was specifically manipulating Sungho and knowing Sungho didn't really wanna...while it's still not rape even then...it's certainly dishonorable and unkind.
Its kinda complicated sungho went along with what dohyun wanted because he didn't want to lose him as a friend in one of the flashbacks sungho was shown to be uncomfortable though he didn't run nor fight off dohyun though it can't be considered rape we can't consider it as fully consensual as well it clearly left a mark on his psyche and it feeles like something more horrible happened to make dohyun leave and forget and for sungho to go psycho obsessed.
But Dohyun had no way of knowing all the stuff in Sungho's head. From his perspective, it was consensual (again, unless we get some insights from his pov otherwise).
People have to take responsibility for their decisions. He was high school, not elementary school. If he didn't want to, then he should not have, and if the meant losing Dohyun, then Dohyun wasn't worth his time. If keeping Dohyun was more important, then he chose to do what he did to get what he wanted.
It's one thing if Dohyun applied a lot of pressure and was creepily manipulative. But that Dohyun did it reluctantly, he still chose to do it. It's on him.
I mean"Sungho" in that last part."
I didn't contradict you yes I do agree in dohyuns eyes it was consensual I was pointing out sunghos side that it might not have been fully consensual in the first flashback where it shows them having sex dohyun was still persuading sungho and dohyun might have been a bit manipulative he used games a means for sexual contact and by the looks of sungho he looked desperate enough to pick an option even if he doesn't want to http://www.mangago.zone/read-manga/warehouse/uu/warehouse-chapter-27/10/ . yes they r not elementary they r in high school undergoing puberty which can cause hormonal imbalance and behavioral changes and I'm not saying sungho didn't take responsibity for his decision I agree its on him my point was that those event triggered his insanity I don't blame dohyun for his actions as wellal as mentioned they are in high school and in puberty and that stage in life is where we are more conscious and curious so they tend to experiment both had different perspective on the actions done to the other again since we have very little of the flashback we still don't know the severenity of trauma each received in childhood guess we just have to wait and see.
Other parts that might show it not totally consensual and manipulation was used
http://www.mangago.zone/read-manga/warehouse/uu/warehouse-chapter-28/2/
http://www.mangago.zone/read-manga/warehouse/uu/warehouse-chapter-28/6/
http://www.mangago.zone/read-manga/warehouse/uu/warehouse-chapter-28/13/
http://www.mangago.zone/read-manga/warehouse/uu/warehouse-chapter-28/14/
http://www.mangago.zone/read-manga/warehouse/uu/warehouse-chapter-28/15/
He used Sunghos attachment to him as a means of getting what he wants read chapter 28 after those events he disliked being touched and is more disconnected with the people around him again I'm not putting blame on dohyun rather I'm pointing out the cause of the hate and insanity on sungho part I reread the manga and seeing the flashback and current situation I kinda see the manga in a new light though im not saying I agree with sunghos actions I kinda starting to understand how it went downhill.
Except is this all in Sungho's mind. Did Dohyun SAY those words or did Sungho assume that was what would happen. It's not very clear.
At the same time, that's not enough to drive someone crazy unless there was some sort of mental weakness to start. I still think other things happened we haven't seen, because what has transpired so far is not drive-to-violent-madness level. And Sungho has been acting plain insane.
"If you don't like it then this is the end" looks more like a dialogue then a thought but yes it wasn't clearly stated but if it was the case then then that just proves my point and yes I do believe there is more to it then what we have seen so far he was already mentally weak if read chapter 28 from what happened with him and dohyun so anything more severe would cause him to snap.
mistranslations my friend.that was definitely a thought and not something Dohyun said.
I really grew to dislike Sungho. His actions are insane. All this because of some high school drama. Although I don't like him, it's getting interesting.
Still, I can't imagine them in a romantic way after this. This relationship seems to be based only on desire at this point.