Armand, an ordinary office worker, dies in an accident and wakes up in the body of Eldric Carval, a Duke in a medieval kingdom filled with swords and magic.
Thinking his life was over, he is instead given a mission by a mysterious system: to become the "Hero of Entertainment," tasked with bringing modern entertainment—such as manga, music, movies, and games—to this quiet and underdeveloped world.
Together with his family and allies, Eldric strives to transform the old world with new entertainment. Will he succeed in bringing about change?
