A large island isolated at the boundary between the West, the center of culture and economy, and the East, blessed with natural beauty.

All magic is created solely from magic circles composed of dots, lines, and circles (arrays). One can use magic by drawing established magic circles using special ink and tools modified for oneself.

Having fought through the Hundred Years' War, the Imperial Family felt the importance and danger of this power to their bones; the remaining mages came to prosper and live on an island separated from others. A master must only speak to disciples who can keep the secret, and the disciple must protect that secret.

The Imperial citizens believe that all those who use magic possess innate talent or some kind of supernatural ability.

On a large island where sea routes are cut off and generally inaccessible, where mages gather to live, Master Matthias Minerva and his disciples operate a magic workshop.