Nozomi, a wife who married a man much older than her, is shaken when she finds out that his stepchild is her old lover, Atsushi. Although they never had a physical relationship, they were once in love with each other. Naturally, they continue to live together in an awkward atmosphere... However, one night when her husband is away on a business trip and they are left alone together, Nozomi is moved by Atsushi's passionate feelings for her, who reveals his Kokoro feelings for her for the first time, and she gives herself to him. Worried about her relationship with Atsushi, Nozomi once again seeks his body, even though she feels guilty about her love for her husband...