The Case Where I, The Strongest Mercenary, was Reincarnated as a Bullied, Introverted High School Student – With My Unbeatable Fighting Skills, I Rule the School and Underworld

Native title: 最強の傭兵である俺がイジメられてる陰キャ高校生に転生した件～語学堪能で喧嘩も最強な俺は学園と裏社会で現代無双する――『転生傭兵の学園無双』