Raised by her uncle with her twin brother, Ok Chanmi goes through alot of things she never thought about. It's just a mess, chaos. and she is stuck at the middle. Stuck between boys who she was never supposed to meet. ... and she has to choose only one side. ⌠ OK CHANMI X STUDY GROUP X WEAK HERO CLASS 2 ⌡

Lee Seo-yul and Kim hyun, two people who are in love with each other. When Lee Seo-yul made an accident that caused a memory loss, her feelings towards people she loved, everything about her life. Kim hyun will try to make her remember again, her old life, her friends, their love, everything.