From what I understood he was always gay but didn't really understand/accept it till it became this obvious with the whole "dreaming about the teacher situation" and that moment was shown simply to help him confirm his feelings. The "beautiful man" was in fact a woman but only glancing at her face at first he thought it was a really pretty man, thus him rejecting her once he understood she was a girl (aka saw her boobs xD)
I remember an article about a "pretty boy" at the buss stop who turned out to be a girl and she confirmed it when the girl that asked for her number tried to message her and the "pretty boy" told her that she felt awkward telling her she was a girl in front all the other people xD
aaaaaaaah omg that makes so much sense!!! im so dumb why didnt i notice that lmao i thought she was supposed to be a man and that made him realise he was gay didnt even realise him looking down lol
awwww ;;
ok in chapter 13 Sulwon said that the first time his heart pounded was when "the beautiful man" in the subway asked for his number. but doesnt that person have boobs? did someone else notice that? is this an universe where your body plays no role whatsoever when it comes to gender? or where transpeople are 500% integrated, not even thought of as "trans" and gender is only indicated by the hair style? if so that would be awesome!!! but im wondering if im seeing things