On The Floating Continent Kalikose, the most important things to the society under the shogunate commission are the Oracle Shogun's divinations and one's ability to form a pact with a magical creature.

Although it is unclear why the tradition of people having familiars is so strong, one thing is for certain Solus Sakamoto will have to constantly put up with the constant hounding from his classmates for having a pack with the female spirit Nebula.