Hyun-jae and Mirae

Trama

At seven years old, Hyun-jae, who often found himself on Mirae's left side, gave her a toy ring and promised to marry her when they grew up before he moved away. Thirteen years later, they reunite at the same university, though in different departments. As the adult Hyun-jae once again finds himself on Mirae's left, their journey to fulfill their childhood promise begins.