I Killed the Devil: but Was Imprisoned in a Dungeon

The shadow nourishes the thief's code. He moves forward in the darkness, wielding the double daggers in his hands, just to seek justice for the slums. "The darkness in the slums is caused by the devil." This is the "truth" he has heard since he was a child, and it is also the goal he relies on to survive. He holds a double blade and forms a team with three others, just to defeat the devil who symbolizes "evil"... In the end, he killed the devil without hesitation. But during the award ceremony after killing the Demon King, he discovered that the real evil was right in front of him...