Main Characters[]
Asia Argento[]
Rassei's master. Rassei is very protective of Asia and can easily get jealous when other people, especially men, get close to Asia.
Issei Hyoudou[]
Issei has a profound hatred on Rassei due to him killing the slime he intended to make as his own familiar, attacking him, and getting close to Asia.
Yuuto Kiba[]
Yuuto is shown to have some grudge on Rassei after the latter attacked him twice.
Ophis[]
Rassei and Ophis have built a good relationship with each other as shown in Volume 13 where they are shown playing catch with one another. Ophis even offered to train Rassei.