Bard Cornelius is the son of a nobleman in Mauricia, an empire in a parallel world, and he carries three souls in a single body. Besides his own mind, he shares himself with Oka Sanai, a stingy samurai, and Masaharu Oka, a high school otaku fond of animal ears. Armed with their know-how in military strategy and business, Bard sets out to game his way to the top in this action fantasy adventure.