After getting into a university in Tokyo, adult nephew Ryota moves in with his aunt and uncle. His beautiful, kind aunt has been the woman of his dreams for years, and living under the same roof keeps him constantly aroused—but she is married, and his uncle is always nearby. Unable to touch her, he wraps her panties around his cock and masturbates with them. One day, he gets so carried away that she catches him. Instead of scolding him, she asks, “You really like my underwear that much?” and begins stroking his cock with her freshly worn panties, determined to squeeze out every drop.