Ars Goetia ～The boy who was called incompetent uses 72 demons to become UnstoppableArs Goetia ~Munou to Yobareta Shounen wa, 72 no Akuma wo Shieki Shite Musou Suru~; アルス・ゲーティア ～無能と呼ばれた少年は、７２の悪魔を使役して無双する～; Ars Goetia: The Son Called Incompetent Commands 72 Demons to Unleash Unrivaled Power; Ars Goetia: Bản hùng ca về thiếu niên vô năng, người nắm giữ sức mạnh của 72 con quỷ.

I have decided not to expect anything from you anymore. One day, Norman is told this by his father and is kicked out of the house. There was no way around it. Because Norman could not use magic at all. However, Normans fate changes drastically when he encounters the Grimoire Ars Goetia. The Grimoire called Ars Goetia was used to summon 72 demons. The demons summoned by it, however, bring about a shocking revelation to Norman. Yes, there was a reason why Norman could not use magic. And so, Norman becomes the strongest sorcerer in the world by subduing numerous demons