Chaeyeon Uchiha is the best kid in the classroom, while Sakura is the weakest. Both of them had a bad impression of each other in the beginning, but after their trainer pairs them up for a D rank mission, they bond fast.

Chaeyeon and Sakura are dating and the both of them will do anything to keep it a secret. Yena knows about it and will always try to out them, but with sensible Eunbi's help, the couple is safe.