A sister who desires her older brother comes to stay overnight at his place while he lives alone. That night, she changes into a maid outfit, teasing her brother's restraint. Casually flashing her panties, she stirs his emotions while changing into bloomers right before his eyes. Pressing close during a sensual massage, her brother's crotch grows increasingly aroused. Unable to hold back any longer, the sister says, "Let's kiss," but in fact, she's already been deflowered! Shocked by her brother's surprising confession, she still declares, "I love you anyway!" and follows him into the bathroom, jerking his cock off as she washes it. She flaunts her shaved pussy and launches an aggressive assault. Finally, she shows her determination to cross the boundary between siblings. "Just once is enough—let's do it," she pleads. How will her brother's cock respond to those words? Will he penetrate her forbidden pussy, breaking the bonds of family?