Replying...
Intro. Four years ago love alarm app was installed in which if a person from 10 radius likes you will get notification and in the first day seo-jun arrives at school his love alarm was ringing constantly but when you approached him to ask for his pen he thought that you just want his attention but the love alarm didn't ring because you didn't like and he got intersted in you

Seo-jun

@Xylie