The God-Slaying Demon King: Reincarnated as a Mere Mortal to Become the Strongest in History!The God Slaying Demon King; Kamigoroshi no Maou, Saijaku Shuzoku ni Tensei shi Shijyou Saikyou ni naru; 神殺しの魔王、最弱種族に転生し史上最強になる; Le Roi Démon Pourfendeur de Dieux, Réincarné en la race la plus faible et la plus forte de l'histoire.

Hiram, the strongest demon king in history and ruler of all demons, defies the Demon God's demands for sacrifices. This defiance leads to a fierce battle that leaves Hiram dead. Despite being the strongest, he could not overcome the truth of this world: Demons cannot defeat the Demon God. Five hundred years later, Hiram has finally reincarnated as a human. While humans are considered the weakest race, they actually have the highest potential for growth — and Hiram fully intends to take advantage of that fact.