Hatanaka, a former swimming club coach, and his student Makoto met through school club activities. Even though Hatanaka was dismissed six months ago, Makoto, who admired Hatanaka as a coach, showed up at Hatanaka's house to ask for his guidance. However, Hatanaka, who lived a rough life, began to take a twisted approach to his guidance... In front of Makoto's well-trained body, Hatanaka repeatedly commits obscene acts under the guise of training, but Makoto gladly accepts Hatanaka's actions and his masochistic talents begin to blossom...