I'm Not Human, I'm Becoming the Demon King

With the Demon King fallen, a tournament for the new ruler begins. Li Tianyi, the strongest human, accidentally registers and crushes powerful opponents like the Dragon King, despite constant interference from Bai Miaomiao. Li Tianyi is crowned the new Demon King, revealing he was sent by Bai Miaomiao's brother, the former Demon King, and discovers Bai Miaomiao was formed from his own ribs. Their fates are linked as they leave the Demon Realm together to avenge the murder of the Demon King and the theft of Li Tianyi's body by the human faction. After defeating their foes, reclaiming all their power, and resurrecting loved ones, they push for peace between humans and demons. Once the mission is accomplished, the two depart together into freedom.