This game is set into the fictional fantasy world of Mundus. This book describes this world from the perspective of Tentaikan people. Tentaika takes heavy influence from medieval Japan and other Asian countries of that time. Tentaika is by no means a direct copy of feudal Japan. Samurai and bushido as concepts are pretty much identical to their sources, but the way bushido influences the everyday life of samurai in Tentaika differs based on the ideology of each clan throughout the nation. Tentaika is divided into eight prefectures. Each of these prefectures in exception of Genkaisha prefecture is ruled by samurai clan.