Former swimming coach Hatake and his student Shin met through school club activities. Despite Hatake being dismissed from his position half a year ago, Shin, who worshipped him as a mentor, would often visit Hatake's home to seek guidance. However, Hatake's guidance, due to his chaotic lifestyle, began to take a twisted direction... Facing Shin's well-toned body, Hatake repeatedly performed lewd acts under the guise of training, and Shin gladly accepted them, blossoming into a masochistic talent...
