First story

Kurabe began working under his female boss, Sakino. Every time they completed a task, they celebrated with drinks and ended up having sex. Right after Sakino reached climax and fell asleep, her daughter, Sakana, appeared in the bedroom. In front of her mother's eyes, Sakana began to desire Kurabe's member!

Second story

Professor Tokita makes a home visit to the house of Mai, a student who recently transferred. At school, Mai is cold and distant, but at home, she's a completely different girl and starts actively seducing Tokita! However, it's revealed that she is actually Mai's mother, a woman with an extremely youthful appearance. After that, they are discovered by the real Mai, and they begin having Oyakodon sex with Tokita.