Nao, a genius anesthetist, is being manipulated by the debt her father left behind. However, she maintains her pride by temporarily putting herself into a 'tuna state' with local anesthesia. But then a pro of 'climax development positions' appears! A climax that surpasses Nao's anesthesia attacks! The pleasure swells up as much as she numbed, and with the collapse of her pride, she drowns in the climax pleasure...