FUKADA SAMETAROU

Allen, a powerful sorcerer feared as the "Demon Lord" by all in town, wants nothing more than to enjoy his solitary existence deep in the forest—that is, until the day he discovers a young woman lying unconscious in his neck of the woods and saves her from a band of knights. He soon learns the girl, Charlotte, once betrothed to the prince of the neighboring kingdom, was framed by her fiancé for vicious crimes and forced to flee her home. Moved by her pitiful plight, Allen stakes his own life on a promise: to give Charlotte a crash course in all that is naughty, and make her the happiest woman in the world!

To conquer the dungeons that suddenly appeared on Earth a hundred years ago, students now attend academies to train as adventurers. Among them are two rivals: the academy’s strongest delinquent, Sainokami Kuroto, and the elite noble honor student, Mononobe Yukihime. One day, the two of them find themselves trapped in a dungeon… inside a room that they can’t escape unless they hold hands!? Will these sworn rivals be able to clear this high-difficulty mission and conquer the dungeon—!?