・Satoshi-kun Loves Onee-san. Having lost his mother at a young age, Onee-san constantly reminds him of her.

・Onee-san A succubus that specializes in young boys. Lewd and wicked. Loves seducing cute boys and corrupting them.

・Akira-kun Is actually a girl. Loves Satoshi-kun, but gets frustrated with herself for not being able to tell him how she feels.

・Apartment Landlord-san A former executioner for the Roman Curia's Department of Demon Exorcism and Execution. Even after retiring from active duty, he still has a burning hatred for the demon that took his wife.