In a world where you can only tell if someone is your fated soulmate by a red string that is wrapped around both of your fingers.

All of Rin’s friends had found their fated pair, while he in nonchalant and doesnt believe in it “fated pair” thing, “It’s probably fake anyways” he says to one of his friend while they were in class.

Then, the teacher comes in and tells them to be quiet as she introduces a korean transfer male, he walks in and..the red string started appearing