Omega Travels into the End of the Earth

Fanxing, an ordinary beta, accidentally entered a strange book and became an ordinary earthling. Good news, there is no hierarchical ABO gender in the earth world. Bad news, he has differentiated into an Omega who comes into heat once a month, has no inhibitors, and no Alpha to help mark him. Worse news, he discovered that something was wrong with the world. The handsome roommate who shared the same apartment was gentle and considerate during the day, greeting him with greetings, but at night he lay on his door with his head split in two and drooled at him. His stepbrother, who had hated him since childhood, suddenly stuck behind his back and smelled him abnormally. A strange voice came from his stomach: "It smells so good, I really want to eat you." And the male god who once looked down upon him suddenly turned into a terrible licking dog. Every night, Lu Fanxing could hear the sound of tongues licking the glass windows. …… This situation is even more serious when Lu Fanxing is in estrus. Scary, weird and strange people slowly surrounded him. Lu Fanxing, who could no longer do anything, decided to accept the task given by the system - to bind the CP with the future world-destroying villain and complete the task of redeeming the villain's soul. It is said that the future villain is a terrifying, cruel, cold... Monster. More weird than weird, more Shura than Shura, he is an out-and-out cruel devil. Looking at the various monsters and monsters that were slowly surrounding him, Lu Fanxing gritted his teeth and rushed forward. It was easier to serve one person than a group of them. The devil will be the devil. But seeing the handsome face of the future villain, Lu Fanxing was stunned. Isn't this the ex-Alpha, his mortal enemy who was dumped by him? Looking at his ex's eyes, which were scarlet and frightening but full of twisted excitement, Lu Fanxing transformed into an Omega. Two words flashed in his mind: hot. In order not to be defeated by his "cruel" predecessor, Lu Fanxing could only pretend that he was an indigenous person. Even if the Omega pheromones were released and flew up, he was killed by the "Lu Fanxing" who was not the other person. Ex, bah, the villain said that he once had a white moonlight cinnabar mole, and Lu Fanxing looked exactly like his predecessor. So Lu Fanxing tragically embarked on the road of becoming a substitute. The villain added that his Bai Yueguang was obedient, lively and cute, and allowed him to do whatever he wanted. Lu Fanxing:...... Damn it, are you spreading rumors in front of me? When did I let you do this or that? You damn bitch. Looking at Lu Fanxing's wonderful face, the villain raised his eyebrows and whispered a threat: "Huh?" Lu Fanxing:...... Explode the earth, he won't do this shit! Purpose: Saving the world is everyone's responsibility.