Luo Xingyun is a straight Beta, an unremarkable straight man, with only mathematics and physics in his heart. Sitting two seats away from him is the top Alpha, Pei Yan, a strikingly handsome school idol from the southern part of the city, a master in all subjects, and an academic genius. One day, Luo Xingyun witnesses Pei Yan being cornered by the school bully in a secluded area. He silently pulls his misty blue turtleneck sweater up over his head, grabs a crowbar, and hits the school bully from behind, securing Pei Yan's victory. Having done this, he leaves without a trace, deeply hiding his achievements and fame. From then on, a legend of a famous fighter spreads in the academy, with no clues left for the school bully to follow. However, Luo Xingyun notices that Pei Yan seems to be watching him intently. A few days later, Pei Yan calls Luo Xingyun to his dormitory. Luo Xingyun enters to find Pei Yan sitting there, intently examining that misty blue turtleneck sweater. In front of him, Pei Yan’s pale fingers lift the sleeve of the sweater, and like a gentleman inviting someone to dance, he brings it to the side of his face and takes a gentle sniff. “It smells really good,” he says, his deep, dark eyes fixed on Luo Xingyun. Luo Xingyun: “... Classmate, I am a Beta.” Pei Yan: “Are you sure?” Luo Xingyun collects his own body secretions and surprisingly distills a bottle of pure Omega pheromones. Luo Xingyun: “Holy crap.” At the age of 18, he undergoes a late differentiation, and his biological match is Pei Yan. The differentiation process is unstable, and Pei Yan simultaneously enters a susceptible period, with his A-values off the charts, leading to a series of psychological issues, including possessiveness, aggression, protectiveness, destructiveness, and various unknown dark thoughts. The doctor suggests Luo Xingyun and Pei Yan form a mutual support group. Pei Yan will protect Luo Xingyun through a safe differentiation, while Luo Xingyun provides psychological counseling to Pei Yan to maintain his rationality. Luo Xingyun: “How can you feel better?” Pei Yan stares at his long, fair neck and lightly licks his canine tooth: “If you let me take a bite, I'll feel better.”