I think you got mixed up and should reread that. He wanted him to be rougher and asked for it, yeah he complained about him treating him gently and that's in his head. I'm sorry if you don't get what you're reading but maybe if you don't like it and have a problem then may I suggest you stop reading? If you aren't mature enough to understand the story and the ukes past then all you're reading is what's in your mind. The idea of what you think is going on. Then you complain about the characters but they're just characters. Why do people keep complaining and talking about it when they're the ones who choose to read it? If you don't like the character then simply stop reading it and move on. Nobody forcing you to read it!
No. I get that he's trying to be "masochistic" and trying to be a sex-addict, cool.. but he's always COMPLAINING. His Tantrums are hurting people. The point of having sex with everyone should be it satisfies all parties, but he always has a problem, always feeling victimized. And he's making his sex partners feel guilty OR feel bad. Even that old man who slapped him for calling out Hyun's name. Shiwoo is miserably annoying..
It's cool, sleeping around with multiple partners, playing with people, even manipulating them~ no judgment. What's 'annoying' is when a person 'asks for it' and then complains after you give him what he asked for. Shiwoo was complaining that Hyun (seme) was gentle and should treat the him rougher: http://www.mangago.zone/read-manga/see_you_agai/uu/see_you_agai-chapter-45/3/ ╥﹏╥ Then when his bed-partner slaps him a bit, right after that thought, he complains???? wtf. *He always feels VICTIMIZED*
http://www.mangago.zone/read-manga/see_you_agai/uu/see_you_agai-chapter-45/5/
It's OKAY if Shiwoo clearly doesn't care about Hyun and they're just Sex Friends- cool!... Yet it's below-the-belt and foul to immediately ask Hyun to fuck him while a stranger's body-fluid is in him----- ew... ever head of S T D??? This goes beyond 'emo-ness' it's stupidity. At least clean-up, it's not like you all did an orgy where you know each other.
The author is a talented artist.. but this is like, if Yashiro from "SAEZURU TORI WA HABITAKANAI" lost all his brain-cells.