Li Dalong, a mercenary medical soldier with mysterious medical skills, was possessed by an unknown force during an operation in a desert country. He gained the ability to summon demons and started a new life.
Summon the seven deadly sin demons and unaffiliated demons to travel between the hell world and the human world, letting them work for you like mercenaries and sharing their abilities with each other.
Living in the White Eagle Kingdom, I wander in the gray area, searching for my true self.
