Misaki Sakimiya, known professionally as Zaki, is the former heiress to Sakimiya Steel and the assassin hired to kill the original Polka Shinoyama. In the aftermath of her own premature murder and subsequent resurrection as a Zombie—respectfully the accidental and purposeful doing of the Corpse God—she moves in with the Corpse God and assists him with his fortune-telling endeavors.

Misaki has since evolved to become a Vampire Larva per the Corpse God's magic, her newfound powers allowing her.