After losing her husband, Reika lives with her son Naoto. However, when her Naoto became an adult, she decided to remarry to start her second life. On the other hand, Naoto couldn't accept her mother's sudden remarriage and was rebelling alone... One day, Naoto accidentally witnesses her mother being vaginal cum shot by her new father. Naoto couldn't help but hold his breath at Reika's ecstatic expression, but at that time, he still had no idea. She finds Reika obsessed with the charm of her vaginal cum shot...
