Seishi Kishimoto (岸本 聖史, Kishimoto Seishi), born November 8, 1974, Okayama Prefecture, Japan, is a Japanese manga artist. Seishi's most famous work to date is 666 Satan (O-parts Hunter). Seishi is also the younger identical twin of Masashi Kishimoto, author of Naruto. In elementary school, Kishimoto started watching the anime adaptation of Kinnikuman alongside his brother and the two of them began to design their own superheroes.
He made his debut with a oneshot named Trigger (トリガー, "Torigā") published in Square Enix's Gangan Powered in 2001. With the story he wanted to write about "faith and parent-child relationships," but had trouble fitting it within the page limit.
In 2001, he started his first series in Shonen Gangan named 666 Satan (666～サタン～, Roku Roku Roku Satan), also know in US as O-Parts Hunter. The series spawned 19 volumes and concluded in 2007. He created a oneshot Trival (トライバル, Toraibaru) in final issue of Comic BomBom in December 2007. In April 4, 2008, he began his second series Blazer Drive (ブレイザードライブ, Bureizā Doraibu) in Shonen Rival Issue 2008-05, which was based on Trival. The series ended in December 29, 2010 in the Issue 2011-02 of Shonen Rival and spanned 9 volumes. The series also received a Nintendo DS video game.
In April 2011, he created a oneshot for the shojo magazine Aria as part of guest shonen artists doing shojo stories in the magazine. The oneshot was named 12 O'Clock Bell Rings (12時の鐘が鳴る, 12-ji no Kane ga Naru) and was a twisted, gothic-horror remix of the classic Cinderella story.
On December 3, 2011, Seishi began his 3rd serialization with Crimson Wolf and Fetters of Sheep (紅の狼と足枷の羊, Kurenai no Ōkami to Ashikase no Hitsuji) in the 2012-01 Issue of Shonen Rival. The series ended on February 4, 2013, in the 2013-03 Issue of the same magazine, spawning 4 volumes.
On October 11, 2014, Kishimoto started his 4th serialization with Sukedachi Nine (助太刀09, Sukedachi 09) in the 2014-11 issue of Shonen Gangan. The series ended on July 12, 2016, in the 2016-08 Issue of Shonen Gangan, spanning 5 volumes.
On April 22, 2017, his 5th serialization Mad Chimera World (マッドキメラワールド, Maddo Kimera Wārudo), began in the 2017-06 Issue of Mornin Two.
- Trigger ((トリガー) (2001) Gangan Powered (oneshot)
- 666 Satan (666～サタン～) (2001 - 2007) Shōnen Gangan (series)
- Trival (トライバル) (2007) Comic BomBom 2007-12 Issue (oneshot)
- Blazer Drive (ブレイザードライブ) (2008 – 2010) Shonen Rival 2008-05 - 2011-02 Issue (series)
- 12 O'Clock Bell Rings (12時の鐘が鳴る) (2011) Aria 2011-06 Issue (oneshot)
- Crimson Wolf and Fetters of Sheep (紅の狼と足枷の羊) (2011 - 2013) Shonen Rival 2012-01 - 2013-02 Issue (series)
- Sukedachi 09 (助太刀09) (2014 – 2016) Shonen Ganga 2014-11 - 2016-08 Issue (series)
- Mad Chimera World (マッドキメラワールド) (2017 - Ongoing) Morning Two 2017-06 - Ongoing Issue (series)