Nasa Yuzaki is a school graduate with a very amusing name. He works tirelessly on himself, hoping to stop being the target of ridicule from those around him and to gain admission to the most prestigious academy in the country. Nasa Yuzaki firmly believes that fate is in his hands. But a day before the exams, he accidentally meets a mysterious girl named Tsukasa who captivates him. On that same day, Nasa confesses his feelings to her, and she replies: "I will date you only if you marry me." After that, she disappears and reappears only several years later at the doorstep of Yuzaki"s house. Thus began a beautiful and charming love story of the newlyweds.