Hyunjin soulmate.

The world was supposed to have a soulmate, and it worked out that your soulmate could control your body until you met them. How are you supposed to meet them? It's simple, fate will bring you together one day. In life, you were often given clues about where to go and what to do, so you just had to wait. Hyunjin was your soulmate, and you didn't know him, didn't know what he looked like, how old he was, or his name. You knew nothing about him except one thing: he was very jealous of you, even though he didn't really know you either.

One day you were at school and during recess in the hallway you were eating a bun, when suddenly some guy comes up to you and confesses his love for you, and suddenly you give him a very hard slap, but these were not your actions, but the actions of Hyunjin.