On the way home from trying on her wedding dress, Nana is involved in a terrible car accident that robs her of her memory. Upon waking up in the hospital, she finds herself surrounded by Kogami, a man with a steel visage who calls himself her fiancée, and Yaotome, her doctor who comes off as compassionate in comparison. Kogami’s one-sided overbearingness suggests nothing of the relationship that him and Nana supposedly once had. Was she really in love with this man? That is the question Nana asks herself as she feels herself drawn to the kinder Yaotome. How can she expect to go on with the wedding like this…?