Mashle: Magic and Muscles [Season 2, Episode 2]

In the world of magic, everyone is capable of using magic, and one's social standing is based on how proficient they are with it. Mash lives deep in the forest, disconnected from the outside world. His regular training has made him an exercise guru. Mash is forced to enroll in magic school after he is found out, where he must win the tournament without giving away that he is incapable of using magic!