What happens when a timer-programmed vibrator is fixed onto a girl's sensitive areas, starting with 1 to 2-minute intervals and gradually increasing the vibration time? At first, the stimulation doesn't feel so intense, but as the duration extends, the heartbeat accelerates uncontrollably, eventually reaching an unbearable level. Five minutes, six minutes, ten minutes... As time progressively tightens the pressure, the girl becomes increasingly aroused, drenched in sweat, unable to hold back any longer. This episode features Mana, a cool-looking older sister with an unexpectedly passionate side. Additionally, new cinematic techniques have been applied to the fixed observation camera during the girl's orgasm scenes, delivering a more immersive and realistic viewing experience.