あらすじ
Five seconds after being born, he was already fighting the most fearsome evil spirit—inside his own mind! As a result, his magical power instantly maxed out beyond measurable limits!? Shiragami Kai is reincarnated into a Japan where magical creatures known as “Reima” truly exist. However, the moment he is born, he finds himself in the middle of a ritual meant to summon the most vicious evil spirit. His mother is nearly cursed to death, the evil spirit rampages while trying to possess Kai’s body, and as Kai battles the ultimate evil spirit within his mind, he unknowingly transforms into an utterly extraordinary being. An unstoppable exorcist rises in this Japanese-style fantasy of overwhelming power—let the story begin!