In a school where subgenders exist, Tsubaki Mochizuki, an omega and judo club captain, constantly clashes with the alpha karate club captain, Ruuji Ishio. Forced to share a small gym, their arguments escalate until a joint punishment brings them together. Alone, Ishio reveals his deep attraction to Mochizuki, warning him about the dangers an omega faces from an alpha's pheromones. Despite Mochizuki's resistance, Ishio insists they keep their distance, unknowingly triggering Mochizuki's plan for revenge. As tensions rise, a revealing encounter in the locker room prompts Mochizuki to act on his misguided assumption of Ishio's intentions, leading to unexpected consequences and a revelation that challenges their dynamic in a world fraught with hidden dangers.