I, Ukei Kaito, who was summoned to another world as a hero, asks himself. As I was begged for help, I became a hero and defeated the Demon King and saved this world ... I was betrayed by all the parties as soon as it was used up, and I was chased by being made into an enemy of the world. They were innocently guilty of those who shared their pains and thought they were friends, and were finally killed. On the verge of death, rather than praying for salvation, I cursed them to suffer, torment, and kill them. -Soon, I realized that I was back at the time when I was summoned to another world. With the memory of being killed by a traitor. I'll kill the princess, the magician, the saint, the knight, the merchant, the king ... all of them! In the cruelest way, I'll drown you in the blood of a piece of unhelpful pain and screaming! !! I set out with a beastman girl who shared my revenge! Another world revenge brave fantasy! "-Now, it's the beginning of revenge."