Legendary Wizard (Light Novel)

The legendary wizard Rihido ended his 200-year seclusion and ventured out into the outside world. He happens to save the life of Mycenae, a noble lady, who tells him about the existence of a magic school. In order to learn new magic, he even transforms into a teenager to enter the school...! A thrilling magical fantasy, in which an out-of-the-ordinary wizard, both in terms of his magic and personality, creates havoc in the world, begins!