Maou Gakuen no Hangyakusha: Jinrui Hatsu no Maou Kouho, Kenzoku Shoujo to Ouza wo Mezashite Nariagaru

The next school is the ''devil's school"! The main character, Morioka Yuto, who is oppressed for the reason of being a human being, bets the seat of the next Demon King and fights against the strongest demons! However, Yuto had a reason to be selected as a candidate ......! ?