VEC-711 Mom's Best Friend Yuri Kudo

A son falls in love with his mother's best friend, Yuri, and his life suddenly becomes rosy. He wants to get Yuri's attention, but he has no experience with women, let alone having spoken to her, so he just runs around aimlessly. At a loss, the son comes up with the idea of using Yuri's underwear as masturbation material to create some memories. Yuri happens to be there and finds him, but instead of getting angry, she kisses him tenderly...