My thoughts on the JINX

Hmmmm what about the Jinx then? Maybe with what happened with his dad, he is gonna flip and hang out with those jerks, do stupid things with them, and this is how he will get connected to Junmin. I think that Mingwa made it clear that the Jinx has nothing to do with sex on itself but more with the feeling of it. So I don't think the jinx is linked to one particular person he had sex with. I think that after this last scene, he will be pretty fuc@ed up, he will not win any of his match and he will start hanging out with the bad guys doing stupid things.
From here I think of two possibilities:
1) He is going to have his first-ever sexual experience, where he will discover something new that will make his brain focus again, that will put him back in the zone. He will win his match right after it, but then play again without the sex and lose and this is how the "Jinx" started. He got surpetitious.
2) He did a drug with the bad guys that put him in the zone, that made him win his matches, and when he decided to stop it all maybe thanks to the coach, he was losing again and that's when he discovered sex, and that sex was putting him in the same zone the drug did.
In both cases, I see Junmin playing a role in perpetuating the superstition, knowing where to hit to make him liable to something, to make him not believe solely in his talent anymore. Anyway, Junmin knows a side of Jaekyung, a side that has nothing to do with his poverty or the fact that he was weak before.