Yuri, who came to visit from out of town, is the longtime close friend of the protagonist's mother. After exchanging greetings, the son initially plans to retreat to his room, but finds himself captivated by Yuri's stunning beauty and voluptuous body, unable to look away. Having had little interaction with women besides his mother, he becomes deeply attracted to her, though he's too shy to express his feelings, blushing and falling silent instead. Noticing his innocent reaction, Yuri teasingly invites him, saying, "Let me teach you about a woman's body." Moved by his pure demeanor, she seduces him. How their relationship will progress is something to watch closely.