This couple has been together for two years and is in a rut. When Mio wants to see her boyfriend, she goes to his place and spends time together, having sex. One day, while visiting her boyfriend's place, Mio sees her neighbor at the entrance. She tries to greet the neighbor, but is ignored. Gradually, her boyfriend becomes busier with work and when he returns home late at night, Mio hears familiar moans coming from the neighbor's room… [Production・Copyright (c)] KM Produce
