Kwon Suhyeok is the deliquent who wearing SeungHee uniform.
He is Kwon Inbeom cousin. SeungHee lend his uniform to Inbeom.
Just wanna correct you and hope you not confused about their name in the future(≧∀≦)
Inbeom is the delinquent cousin. He was the one who harrassed Seungtaek and was originally one of Kyubin's friends in middle school.
Suhyeok is Inbeom's cousin. He's the one who actually knows Seunghee and is Seugnhee, Seungtaek and Kyubin's classmate.
1: http://www.mangago.zone/read-manga/someone_else_s_bl_manhwa/mdx/d_chapter-60/15/
2: http://www.mangago.zone/read-manga/someone_else_s_bl_manhwa/mdx/d_chapter-60/16/ - "I can't contact that guy*. Then I meet a weirdo this morning. I was late!
And Kwon Suhyeok didn't even come wearing my summer uniform!"
*-"that guy" being that uncle Seunghee was supposed to be dating
The one that is confusing their names is you.
I'm surprised Seunghee hadn't questioned why he was slightly upset when he found out Kwon Suhyeok didn't wear his summer uniform. Or why he included that to the list of (bad) things that happened that morning. I'm so gonna celebrate once he starts being conscious of himself with Suhyeok.
ON THE OTHER HAND! Will this official-ness between Kyubin and Seungtaek mean more open interactions in school? Cuz I really want them to show to their classmates that Kyubin's really a good kid and that they're actually "good friends" (wink wink) or "close". (I'm into subtle pda lol)