After an elven disaster, the world was divided into a wasteland and a floating city. Human beings rely on contract elves to survive. The strong can summon divine beasts, while the weak become prey. The protagonist is the reborn genius Crazy Pi, who was betrayed by his best friend and died, and vows revenge in this life. He is indifferent and taciturn, addicted to fighting, and is accompanied by a strange and powerful black Pikachu of unknown origin. In this world, strength is supreme and madness is king.
