Demoted to a Teacher, the Strongest Sage Raises an Unbeatable Class

Sasen Sareta Saikyou Kenja, Kyoushi ni Natte Muteki no Class o Tsukuriageru, Sasen Sareta Saikyou Kenja, Kyoushi ni Natte Muteki no Class wo Tsukuriageru, The Strongest Sage Was Demoted and Became a Teacher, Creating Unparalleled Classes, 左遷された最強賢者、教師になって無敵のクラスを作り上げる