Mephisto

Mephisto is half demon, half human, his mother being the human. He is 15 years old and has the ability to see spirits and to exorcise them. He spends his time with his sisters and friends, and occasionally goes out to help lost spirits. He is kind-hearted and friendly.

Chie and Shige

Chie and Shige are Mephisto's 12 year old twin sisters. Chie has light hair and Shige has dark hair. They care for Mephisto a lot and feel Mika is worthless.

Mika

Mika is the son of one of Mephisto's father's friends. He is 18 and lives with Mephisto and his sisters and often seems annoyed by them, but its seems that he cares about them.

Nana

Nana is a small spirit that lives in the apartment where Mephisto and his family lives. She is like a part of the family too.

Milk Tea

Milk Tea is Mephisto's little hamster companion who often goes places with him.