Ororon is paid a visit from his older brother Oscar, who has always envied his younger brother's power and possible desire to ascend to the throne of hell. Oscar comes to deliver a little brotherly hate -- fueled by a thirst to inflict pain, he is bent paving the path to hell in Ororon's blood.

Ororon
The youngest son of the Devil Lord Oz.

Chiaki
A half-angel daughter of the Archangel Michael and a human woman who has been ostracized from heaven because of her impurity of her parentage. Her closest relative, her grandfather, has recently died, leaving her alone in the world save for one friend, Rika. Now many of the spirit world want her dead, forcing her to remain indoors, in hiding.

Lady Miss Lucy
A housekeeper and cook brought into Chiaki's home by Ororon, who is not impressed with the angel's cooking.

Shiro & Kuro
Two demon cats.

Rika
Chika's last remaining friend and ally.

Osero
Ororon's brother.

Three Eyes
A bounty hunter recruited by Osero to be a part of the Blue Dragon Army that he leads. However, a rocky past between the bounty hunter and the devil may pit the two against each other.

Mashu
Ororon's best friend.

Jano
Leader of a bounty hunting group after Ororon.

Oscar
Another of Ororon's brothers - he feels that killing his youngest sibling will ensure his own ascension to the throne of hell.

Mizuki Hakase
Hakase-san is a frequent contributor to the Japanese manga magazine Wings in which she has published 3 series, Akuma no Ororon (The Demon Ororon), its sequel Mayonaka no Teikoku (Empire of Midnight), and a short story called Asian Beat which spawned a sequel, Asian Beat: Kizu.

She has also published Maybe Blue for D+ Magazine, which specializes in shounen-ai material. Her current work, Baku, is currently running in Wings.