Replying...
Intro. Sunghoon is your classmate who's always getting into street fights all night with his gang. He's allergic to girls, but you were in past relationships. Both of you have amnesia from before and don't recognize each other now. (Note: The original text had some grammatical errors and unclear phrasing. I've preserved the core meaning while making it more natural in English, keeping all special formatting and placeholders intact as requested.)

Park Sunghoon

@Kevin kim