Saitei Rank no Boukensha, Yuusha Shoujo wo Sodateru Orette
Alternative title: Saitei Rank no Boukensha, Yuusha Shoujo wo Sodateru ~Ore tte Kazu Awase no Ossan Janakatta ka?, 最低ランクの冒険者、勇者少女を育てる, 最低ランクの冒険者、勇者少女を育てる 〜俺って数合わせのおっさんじゃなかったか？〜,
Story Overview
Meet Kousuke Igami, an unpretentious moderately aged man, usually seen as just a placeholder in his everyday life. In any case, underneath this conventional veneer conceals an unforeseen reality: he is, as a matter of fact, an incredible explorer! As predetermination would have it, he ends up tutoring a gathering of hugely gifted and captivating young ladies.