Reika who lost her husband and has lived with her son Naoto. However, when Naoto becomes an adult, he decides to remarriage in order to live a second life. On the other hand, Naoto couldn't accept the sudden remarriage of his mother and was repulsing alone ... One day, Naoto accidentally witnesses her mother being vaginal cum shot by her new father. Naoto was involuntarily swallowing Reika's ecstatic expression, but at that time she had no idea. Reika is obsessed with the charm of vaginal cum shot ...
