He will kill the demon king
He does spare the demon realm since the demon king was the one who made the deal with the duke.
What about the 12 Commander? Will they plan to kill Deon?
The demon king was the only one he had beef with in the demon realm. However, it is a tragic end for the 2 villains, the greedy bystander, and the MC. If I recall, MC passes away in Ed's arms or something similar due to his injuries.
guys i need spoilers, will deon also destroy the demon realm/attack the demon lord?