The Sage and Shield

Michael "Mikey Arclight," refuse to go back to Silver Wood School after fighting back from bullies until a series of mysterious and dangerous drugs propels him to return. The new girl, Faith Yurei, a young girl who briefly lived in Japan appears to be the suspect until he learns she's a Sage: a mage relying on magic based on natural energy.

Learning the truth of why she's there, he decides to stay in school to help her stop the mastermind behind these attacks , improve the class environment, and not feel on and island like she is.... definitely not because he finds her cute.