Three years after they debuted, Twice's dating ban has finally been officially lifted. Someone already made a move on Mina and Chaeyoung knows she has to do something before it's too late. Ottoke? It's now or never. Is 10 days enough for her to make Mina change her heart? Will she stand a chance?

Son Chaeyoung is in her first year at the Seoul Multi Arts Academy and has already made a name for herself as the resident prankster, making her popular with most students and even some of the teachers, although she hates talking to most people. And then there's Mina. Myoui Mina is a new student from Japan who's been transferred to the second year, halfway through the first term. She's an avid ballet dancer but is painfully quiet (most of the time) and she tries to avoid most confrontations. So what could happen when the two cross paths? (yo I'm shit at descriptions sorry!!!)