Level Up Grim Reaper

Since the beginning of time humans have been fighting a war against demons even as humanity advanced, Demons could still beat them. Until human beings started getting superpowers that could only be seen from comics manga and TV with the help of these powers and with the help of weapons that could be forged with the essence of powerful beasts, humanity was finally able to withstand the force of the demons. Kai Ace a poor city slum on the verge of death and about to be eaten by a demon saw a bright screen with something written on it before he died [Host has reached a near death state, would you like to acquire the grim reaper system] [YES] [NO] And the decision he made that day changed his life forever now follow him as he embarks on his journey as he tries to become stronger while gaining powerful allies but also meeting powerful enemies