Since this manhwa is similar to Bj alex, not the story line ofc,, I think the seme had a lover from the past and they do the deed almost every occasion before his match and stuff And one day maybe something happened between them and maybe that was the reason his shoulder broked Now he can't win the match or gain confidence unless he had s** with a guy.
@Mrs.owl I would love to see how and when this Jinx started, too. I feel like it's all in Jaekyung's head, because he's more than capable to win without s*x before a match. I noticed when he gets angry or worked up, he also gets anxiety. Going back to the whole shoulder fiasco when he "lied" to get Dan there, they had already done the deed before the day of the match, BUT, when his opponent made him angry, he was mad to the point of trembling. I think he uses s*x for more than his jinx now...it's now a way for him to calm himself down. Even when he gets mad/jealous when he sees Dan getting too close or surrounded by the other fighters, he immediately pulls him into having s*x with him. Just another thought too...