A story about two mothers and children. Tatsuo Shiiba, a son who goes to a university in Tokyo and lives alone. Due to the renovation of his house, his cousin Masaru Saeki and his aunt Mako Saeki live in the house of his mother Narumi Shiiba. In other words, he lives in Tatsuo's parents' house. One day, Tatsuo returned home as originally planned, but he couldn't help but get sexually excited about his mother, and at the end of obscene delusions, he had sex many times and made a lot of vaginal cum shot. At the same time, Masaru recognizes his own mother, Mako Saeki, as a woman and spends her days in conflict. And he also witnesses the Shiiba family's mother-to-child incest.
