Tensei Kenja no Isekai Life - Daini no Shokugyo wo Ete, Sekai Saikyo ni Narimashita - 1 (GA Novel) [Light Novel]

[Machine Translation] Yuji Sano, a company employee working for a black company, is doing his usual work at home when suddenly an unfamiliar window appears on his PC. -You have been summoned to another world! The next thing Eugene woke up to was another world with status and skills. In the other world, he found himself a tamer, an unfortunate occupation that makes it difficult to even become an adventurer.... However, in addition to his tamer powers, Eugene also had an overwhelming talent as a wizard. Together with a slime he made into a companion, Eugene read through all of the grimoires that no one else in the world could read in a single night. Thus, Eugene became the world's most powerful wizard without realizing it, and even acquired a second profession as a "sage. With his overwhelming skills, Eugene becomes an adventurer, completely unaware of his own strength, and rises through the ranks of the other world, destroying all common sense...!

ブラック企業で働く社畜・佐野ユージがいつも通りに自宅へ持ち帰った仕事をしていると、突然PCに見慣れないウィンドウが表示された。―あなたは、異世界に召喚されました!そして、次にユージが目を覚ましたのは、ステータスやスキルのある異世界だった。異世界で彼が得た職業は、冒険者になることさえ難しい不遇職『テイマー』。...しかし、ユージにはテイマーの力の他に、圧倒的な魔法使いとしての才能があった。ユージは仲間にしたスライムと共に、世界で誰も読むことのできなかった魔導書の全てを一晩で読破する。こうしてユージは、無自覚なまま世界最強の魔法使いとなり、第二の職業『賢者』まで得てしまった。圧倒的なスキルを身につけたユージは、自分の強さをまったく自覚しないまま冒険者になると、常識を破壊しながら異世界で成り上がっていく―!!