Do Jin, who received help from Ju Yeon, his girlfriend Ju Eun's younger brother, to prepare for his marriage proposal, wakes up the next day in a house he sees for the first time. Not knowing what's going on...

Aoyoma Tsukiko has always been misunderstood due to her expressionless face. Having to repeat first year of high school again due to her usual bad luck, she strives to have a happy and cheerful high school l...