Nurse Rui thoroughly examines M-boy's body, performing a tickling examination to diagnose the cause, making him squirm with pleasure throughout the process. Waves of ticklishness and pleasure wash over him, bringing him to the brink of ecstasy. Overwhelmed, M-boy decides to turn the tables and start tickling Rui. He focuses on her most sensitive spots, especially her armpits and sides. Extremely ticklish, Rui writhes and reveals her most uninhibited, vulnerable self.