From left to right

Demon Boy Kirino: A bisexual submissive incubus who's tasked with taking the seed of men aswell as giving women his seed,but was demoted due to his lack of dominance now he is just going to be wondering earth trying to figure things out and making new friends.

Ms.Killia- Kirino's owner,and gaurdian who is now currently letting him live in her home in secret. Currently a college professor,she is extremely strict and stern but is also very sensitive aswell as easily triggered in sexual activity.She is a white tiger,who also doubles as a herm

Sandra: And here we have Sandra Tillin, she is actually Killia's roommate/student who also knows about the little incubus and likes to play alot of jokes and having fun with him.She also likes to have her own "fun" with him late at night when Killia is asleep.