Gomi Ika da to Tsuihou Sareta Shiyounin, Jitsu wa Zense Kenja desu ~Shijou Saikyou no Kenja, Sekai Saikouhou no Gakuen ni Kayou~

The Servant Who was Expelled for Being Worse than Trash was Actually a Sage in His past Life: The Strongest Sage Ever Attends the World's Top Academy, ゴミ以下だと追放された使用人、実は前世賢者です～史上最強の賢者、世界最高峰の学園に通う～