The Most Powerful Mage With Zero Magic Power:

Abel wanted to be a mage. When he was seven years old, he was told that he could not become a mage because he had no magical power. Shocked, Abel became a recluse and was even expelled from his parent's house. Even so, Abel continues to study magic. And then he realized; That the magic theories known in this world are fundamentally wrong. After realizing the truth of magic, Abel becomes the strongest among them.+