Reiraku Ju Shi No Mugen Saiki 1 (HJ Bunko) [Light Novel]

[Machine Translation] At the academy, a training institution for warriors to defeat the enemies of mankind, a boy named Izuru, who was called the strongest despite having the lowest magical power, disappeared from the academy after an incident. Three years later, however, he is found by a younger girl, Eve, and is registered as a partner for the promotion examination, in which defeat means death. Although she is scorned as the weakest girl in the school because of her inability to handle magic, Yizuru is attracted to Eve, who fights on without giving up on her dream, and realizes that she has the potential to become the strongest, which Yizuru herself did not know, and decides to raise her. In a world where the law of the jungle is the law of the jungle, the former strongest boy leads the current weakest girl to become a warrior!

人類の敵を倒す戦士の養成機関・学園で、魔力量最低ながら最強と呼ばれた少年イズルは、ある事件を契機に学園から姿を消した。しかし3年後、後輩の少女イヴに見つけられ、敗北=死の進級試験の相棒に登録されてしまう。ろくに魔力を扱えず学園最弱と蔑まれながらも夢を諦めず戦うイヴに惹かれたイズルは、イヴ自身も知らなかった最強となる素質に気付き、育てることにして―「イヴ。おまえは、落ちこぼれなんかじゃない」弱肉強食の世界で元最強の少年は現最弱の少女を導き無双する!!