Jaehyung and Min are friends and rivals who have been practicing judo since childhood. Contrary to Min's expectation that they could do judo together forever, Jaehyung suddenly disappears in front of Minui one day. A few years later, Min enters Jae-hyung

Cheong-ho is a national swim team member who has been struggling with poor records. As an alpha, his physical condition could be improved greatly through sex with an omega, but he has a fear of omega pheromones. His hopes of being a top swimmer seem to be