Shinyû no haha: Namahada no iroka (2006)

Kenji, a college student, invites his classmate Yukie to spend his summer vacation working part-time in the countryside. Kenji and Yukie have girlfriends and both have the same name, Aiko. Kenji's girlfriend is in the countryside, they have been dating since high school, she only knows one man, Kenji. In contrast to the free spirit of the other Aiko. When Yukie arrives at Kenji's parents' house, she is impressed by the beauty of his mother, Michiko. When Kenji finishes his part-time job, he approaches Aiko and enjoys her sex. Yukie, who was alone with Michiko. On the other hand, Michiko, who has lost her husband and now lives alone, is glad to have someone to eat with for the first time in a long time. As she massages his feet, Michiko realizes her feelings and tells him that it is just for today and opens her body to him. Yukie, who is a virgin, has her first experience while being guided by Michiko. From then on, their relationship deepens.