JUX-708 Ayumi Shinoda as the Father's Lover, Discovered by a First Love

A man takes a detour on his way to school each morning to catch a glimpse of a woman he has a crush on, not knowing her name. When he finally speaks to her, he learns she is his father's mistress, brought in because his mother left over his father's bad habits. That night, he hears them having sex in his father's room, and the story unfolds from there. Released in 2015, this runs 118 minutes.