Imagine this mature childhood friend, so lewdly possessed that her breasts would give me a complete erection! Our parents aren't home, and my older childhood friend is staying at my house. Yumino Rinmu ROYD-155

Bathing with his long-lost childhood playmate, his older sister!? His older sister, whom he's known since childhood and who loves to joke around. She acts like she's giving him oral sex and rubbing his breasts. He can't understand her true feelings; although he doesn't understand women's hearts, when they're both naked in the bath, she tells him, in a different atmosphere, that she "likes him"... And then they just keep having sex!