When someone reaches the age of 20, a personalized symbol appears on their skin. This symbol is part of a pair, a connection to another human. A soul mate. Though, as years went by, the idea of a fated match was lost. The symbols stayed as a memory, or a hope, that one would find their fated person.

Jump to now. You're a college student just trying to get by and an awful roommate. Choi San, dance major and a major pain in your ass. He's always finding a reason to start a fight with you.