O-Parts Hunter, known as 666 Satan (Japanese: 666 ～サタン～, Hepburn: Roku-Roku-Roku Satan) in Japan, is a Japanese manga series written and illustrated by Seishi Kishimoto.

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Aug 11, 2001 · Looking for information on the manga 666 Satan (O-Parts Hunter)? Find out more with MyAnimeList, the world's most active online anime and manga community and database. In the not too distant future, mankind battles over O-Parts, relics from an ancient civilization.

The O-Parts Hunter manga series, known as 666 Satan in Japan, features a cast of characters created by Seishi Kishimoto. Set in the near future, it tells the story of a teenage girl named Ruby Crescent who wants to become a treasure hunter, following in the footsteps of her father.

Seishi Kishimoto (岸本 聖史, Kishimoto Seishi, born November 8, 1974) is a Japanese manga artist. He is best known for 666 Satan, which was serialized in Monthly Shōnen Gangan from 2001 to 2007 and licensed by Viz Media in North America as O-Parts Hunter.

Characters in the O-Parts Hunter/666 Satan manga. Community content is available under CC-BY-SA unless otherwise noted.

One day, Jin runs across a girl and saves her from a monster. Her name is Ruby Crescent, and she's a treasure hunter in search of O-Parts. Together, the two travel the land, encountering fierce organizations, old enemies and new friends.

666 Satan (666～サタン～, Roku Roku Roku Satan), also know in US as O-Parts Hunter, is a Japanese manga series published by Square Enix under its Monthly Shōnen Gangan imprint, and created by Seishi Kishimoto.

Jio is a young boy with a tragic past who only trusts one thing in the world: money. Little does he suspect that he is actually a very powerful O.P.T., and inside him sleeps a demon of incredible ferocity. He meets up with a girl named Ruby, and together they decide to embark on a dangerous quest to discover as many O-Parts as they can.

After a short time together, Jio and Ruby part ways (as Ruby runs out of money to pay Jio for being a bodyguard) but almost immediantly Ruby is kidnapped by the man with 666 on his forehead,...