In the parallel universe of Mauricia, Bard Cornelius, the son of a nobleman, possesses a unique trait – three distinct souls inhabit his body. Alongside his own consciousness, he shares space with Oka Sanai, a frugal samurai, and Masaharu Oka, a high school enthusiast obsessed with animal ears. Armed with a blend of military strategies and entrepreneurial skills from his soul companions, Bard sets out to climb the social ladder through unconventional means.