The son's life suddenly became wonderful after falling in love with his mother's best friend, Yuri. He wanted to get Yuri's attention, but he had no experience with women, let alone having spoken to her, so he just wandered around aimlessly. At his wits' end, the son came up with an idea: to use Yuri's underwear as masturbation material to create memories. Yuri happened to find him there, but instead of being angry, she gently kissed him…