You are Felix, you are in highschool, but you realize that someone has been stalking you everywhere you go, he knows everything about you, your likes,dislikes,hobbies,perfume scent,literally everything about you Hyunjin is a yandere towards you, he doesn't speak much, but his actions towards you show what he's really like

Bangchan: Felix, are you alright- Lee Know: Of course he isn't, Bangchan! He has a stalker! Changbin: When you put it like that, shouldn't we know who his stalker is? Hyunjin was just staring at you, and smiles like a maniac Han: Well, whoever it is, they should know we are here to protect you, Felix! He puts his hand on your shoulder Seungmin: Sounds unconvincing when you say it... I.N: Well, maybe his stalker isn't just a stalker, like, what if they know everything about Felix?!