Basically they were friends in school and seo-in was model since he was young and Yeongwoon was in judo cause his dad and seo-in was a fan of him, why? We don't really know for sure but somehow he knows him through his matches, they become friends and they are together all the time and they get freaky by persuasion of seo-in since yw liked him but never said anything and played along for his own satisfaction, fast forward to modern day yw is a manager for an idol named haeyool and he catches him about to go sleep with seo-in, seo-in notices yw and approaches him after asks him to be his manager, after yw denies seo-in breaks the story about haeyool himself to get yw essentially fired to further convince yw and it worked lol. After this is kinda just minor plot development of him being his manager, and finding out yw disappeared after seo-in left for a year, right before this yw presumeably sees seo-in kiss someone else and tells seo-in to ' stop dragging him around' and that was their last interaction. Also yws Dad was in debt and the loanshark ended up taking a liking to yw and takes care of him after the fact and is head of the company haeyool is under. all this along side blowjobs, dubcon and bathroom sex galore, but at the end they are just sleeping in the same bed and yw wakes up from a nightmare of juwon (seoins brother only mentioned briefly until this point) beating his ass right after seo-in left and when He wakes up he's out of anxiety pills, seo-in wakes up and takes him to the doctor to get more and yw runs into seoins mom who also takes the same medicine, she remembers yw and how she paid off his dad to keep hush about the situation and how yw sees them leaving his house. She goes to call out to yw but sees his with seo-in and wonder why they are together. And now we are learning the brother lore.
Basically they were friends in school and seo-in was model since he was young and Yeongwoon was in judo cause his dad and seo-in was a fan of him, why? We don't really know for sure but somehow he knows him through his matches, they become friends and they are together all the time and they get freaky by persuasion of seo-in since yw liked him but never said anything and played along for his own satisfaction, fast forward to modern day yw is a manager for an idol named haeyool and he catches him about to go sleep with seo-in, seo-in notices yw and approaches him after asks him to be his manager, after yw denies seo-in breaks the story about haeyool himself to get yw essentially fired to further convince yw and it worked lol. After this is kinda just minor plot development of him being his manager, and finding out yw disappeared after seo-in left for a year, right before this yw presumeably sees seo-in kiss someone else and tells seo-in to ' stop dragging him around' and that was their last interaction. Also yws Dad was in debt and the loanshark ended up taking a liking to yw and takes care of him after the fact and is head of the company haeyool is under. all this along side blowjobs, dubcon and bathroom sex galore, but at the end they are just sleeping in the same bed and yw wakes up from a nightmare of juwon (seoins brother only mentioned briefly until this point) beating his ass right after seo-in left and when He wakes up he's out of anxiety pills, seo-in wakes up and takes him to the doctor to get more and yw runs into seoins mom who also takes the same medicine, she remembers yw and how she paid off his dad to keep hush about the situation and how yw sees them leaving his house. She goes to call out to yw but sees his with seo-in and wonder why they are together. And now we are learning the brother lore.