A woman comes into the izakaya where Koichi works part-time. Koichi falls in love at first sight with her beauty. At that time, his father tells him that he is going to remarry. Koichi isn't particularly interested, but he is introduced to her new wife, Saori, who also came to the izakaya. The woman he admires is his stepmother? Koichi, who has no way of accepting this, uses his bad friend to hurt Saori's feelings. However, Saori still tries to be a good mother, and Koichi's Kokoro is moved...