My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World
Yuuji Sano, a black company employee, is summoned to another world while finishing his work at home. His profession in the other world, a Monster Tamer, is considered a job that makes it difficult to become an adventurer. However, thanks to some slimes he met, which read several magical books, he gained magical powers and a second profession, Sage. Yuuji acquired overwhelming power, but is he conscious of his strength? Blindly becoming unparalleled and strongest in the world!
Tensei Kenja no Isekai Life: Dai-2 no Shokugyou wo Ete, Sekai Saikyou ni Narimashita, 転生賢者の異世界ライフ ～第二の職業を得て、世界最強になりました～, Tensei Kenjya no Isekai Life