Eskura Bellatrix/Familiars

As a witch, it should come to no surprise that Eskura has a special partner known as a "Familiar" (使い魔, Tsukaima), and as an Archwitch, has managed to make a contract with three Demons, thus becoming her Familiar partners. Each one has been with her for a set period of time, and all possess a relationship equivlant to a small family.

Wisus
Wisus (ウィサス, Wisasu)

Apep
Apep (アペポ, Apepo)

Belzo
Belzo (ベルゾ, Beruzo)