Arcadia Fantasy IF ~How I, Someone Who Was Reincarnated Into a Hidden Boss That Was Meant to be Defeated Used My Otaku Knowledge to Master Magic and Become a Hero~

Native title: アルカディア・ファンタジーＩＦ～敗北予定の裏ボスに転生した俺が、オタク知識で外れ魔法を極めて英雄になるまで～