My Nemesis Who Was Pretending to Be Weak Bit Me on the Back of My Neck.

(The cool and arrogant God of War, the top Alpha VS the sinister and elegant scum, Enigma pretends to be O) [ABO dual male protagonists + dual strong rivals + Enigma outfit O dimensionality reduction strike + ultimate pulling] Yan Jinghan, recognized as the God of War by the First Federal Military Academy, is a top S-class Alpha. He is cold-looking and fierce in fights. Everyone thinks that he will marry a sweet-smelling and soft Omega in the future. He thinks so himself. Until the military academy transferred a "disabled Omega" named Shen Du. This man was 1.9 Meters tall, had no pheromones, and wore gold-rimmed glasses. However, he was on par with Yan Jinghan in all aspects of physical combat. The two faced each other tit for tat and became rivals known to the whole school. Yan Jinghan said harshly: "Even if I die, I will never let this bumbling disabled O touch me!" Until the actual battle on Huangxing, Yan Jinghan encountered a rare pheromone riot, and fell into the arms of his mortal enemy with his body burning hot. He thought Shen Du would take the opportunity to kill him, but he saw the man took off his gold-rimmed glasses, with a lustful look in his eyes, and bit the back of his neck! The terrifying suppression belonging to Enigma came instantly, and the arrogant top A was forced to react like an Omega! Yan Jinghan gritted his teeth: "Aren't you... An Omega?" Shen Du chuckled against his earbone: "Whose Omega is 1.9 Meters tall, sir? When you cry... It's really pretty." Later, the whole school thought that the two were going to fight to the death. But no one knew that in the unmanned mecha cabin, the aloof Yan Shen was being held in his arms by the "weak O" he called, with red eyes and a low voice asking for comfort.