The manhwa "Return of the Disaster-Class Hero" is about a man named Hugo Otters, who was once a hero that saved the world from the Demon King. However, he was betrayed by his allies and was branded as a "Disaster-Class Hero." He was then exiled from the kingdom and forced to live in the wilderness.
Ten years later, Hugo returns to the kingdom with the goal of taking revenge on those who betrayed him. He is now a powerful being, and he is determined to make those who wronged him pay.