Shinji's son is excited to hear that his first love, his mother's friend, Reiko, is returning home to participate in the local festival. That night, when he sees her for the first time in a long time, he is Kokoro by her beautiful appearance, which has not changed since before... He can't help but sneak into the bathroom. Reiko notices this and visits Shinji's room in the middle of the night... Feeling love for Shinji's innocent state while they are alone, the tipsy Reiko can't help but kiss him. Shinji is in ecstasy and can't forget the feeling of her soft lips...