The weakest is the strongest!!!

A boy born into a prestigious family but unable to use magic, despised and bullied by his parents and relatives, was cast out from his home. With no one to rely on, he met a woman. That woman took him in and provided him with a livelihood. Under her care, the boy desperately searched for the reason why he couldn't use magic, and finally discovered the truth—but it only proved that no matter how hard he tried, he could never use magic. However, the boy did not give up. He created his own new magic that only he could use. Armed with magic that no one else in the world could use, the boy decided to enroll in the magic academy. ※This is a story where the protagonist is nearly the strongest. Please read if you're interested.