Doomsday: I Rely on Venom to Evolve

Zhang Yan was bitten by a poisonous fly, which triggered the poisonous fly's blood upgrade system. From then on, Zhang Yan seemed to be cheating on the battlefield of alien beasts. But the poisonous fly blood also made him a poisonous man whose whole body was filled with poison. He is the invincible god of war in the alien beast army. As the leader of the Poison Wolf mercenary group, Zhang Yan killed everyone on the entire wasteland planet. The mercenary group also grew from seven people at the beginning to thousands of people later. He walked further and closer to his goal step by step.