A brief description of the manga The World’s Strongest S-Class Adventurer, Known as the Thunder Emperor, Shows His Power Without Restraint and Becomes a Warrior in the Magic Academy:
Noah Oukrate, the S-Rank Adventurer known as the Thunder Emperor. As instructed by his master, the witch Sherah, he gets enrolled into a magic academy. There, he meets the daughter of the Duke, Claris, and the son of a fallen noble’s house, Arthur.
While working hard together with his classmates such as the A-Ranked adventurer Claris, he continues to be unrivaled at the magic academy with his thunder magic by his side! A school fantasy about the strongest adventure now begins!!