Hiro Mizushima

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Hiro Mizushima
Native name
水嶋 ヒロ
Tomohiro Saitō (齋藤 智裕)

(1984-04-13) April 13, 1984 (age 35)
Other namesSatoshi Saitō (齋藤 智)[1]
Years active2005 (2005)–Present
Spouse(s)Ayaka Iida (2009–present)

Hiro Mizushima (水嶋 ヒロ, Mizushima Hiro, born Tomohiro Saitō (齋藤 智裕, Saitō Tomohiro)[1] on 13 April 1984) is a Japanese actor, producer, writer, and creative director. He appeared in a number of Japanese TV dramas, including Mei-chan no Shitsuji, Hanazakari no Kimitachi e and Zettai Kareshi. Additionally, he was well known as the protagonist in the tokusatsu series Kamen Rider Kabuto. Mizushima serves as the co-producer, co-screenwriter and leading actor for the latest film Black Butler which is the live-action film adaptation of the popular manga. His birth name "Tomohiro Saito" is being credited as co-producer in the film.

Under his pen name Satoshi Saitō (齋藤 智, Saitō Satoshi), he wrote his first novel, Kagerou, which was chosen as the winner of the 5th Popular Publishing Grand Prize for Fiction and was published in 2010.


Mizushima first appeared on Japanese television in 2005, where he played Hiro Misawa, a minor character in the second season of Gokusen. In the same year, he found guest starring roles in Japanese dramas such as Ame to Yume no Ato ni and a small role in the TBS drama Brother Beat.

In 2006, Mizushima became a main character in the series Kamen Rider Kabuto and acted in the lead role in the film Kamen Rider Kabuto: God Speed Love.

Beginning in 2007, Mizushima began taking on bigger roles in more high-profile productions, such as the supporting role of the girl-crazy Minami Nanba in Hanazakari no Kimitachi e and the main role of Soshi Asamoto in Zettai Kareshi in 2008. Both dramas were among the most popular dramas of Japan at the time of their airing. Mizushima also provided the voice of Bruce Banner in the Japanese dub of The Incredible Hulk. Mizushima took the role of Jiro Mori in the 2008 TV drama Room of King.

In 2009, he starred in the drama Mei-chan no Shitsuji as Rihito Shibata, a perfect butler. In the same year, he landed the role of Toranosuke Hayashida in the drama Mr. Brain in which he played a detective's assistant. Later that year, Mizushima starred alongside Shun Oguri in the drama Tokyo Dogs, playing a detective who is a hot-blooded fighting expert due to his earlier days as a delinquent. He also starred in the feature film Drop in the same year in the role of Tatsuya Iguchi, a middle school student in a delinquent gang.

In 2010, Mizushima landed the role of Ryusuke Minami in the film Beck, in which once again acted alongside Mei-chan no Shitsuji co-star Takeru Satoh.

In September 2010, Mizushima left his talent agency, Ken-On, to create an own independent agency called A stAtion.[2] Several weeks later, on 31 October 2010, it was announced that Mizushima had won the 5th Poplar Publishing Grand Prize for Fiction and a cash prize of 20 million yen for his debut work, titled Kagerou, written under the pen name Satoshi Saitō (齋藤 智, Saitō Satoshi)[3] but he decided to decline the 20 million yen prize money.[4] The book was published in December 2010. In the two and a half years of Oricon's book charts, Kagerou recorded the third highest first-week sales, behind J. K. Rowling's Harry Potter and the Deathly Hallows (1.191 million) and Haruki Murakami's 1Q84 Book 3 (398,000).

In 2014, Mizushima starred as Sebastian Michaelis in the film Black Butler, in which he also serves as the co-screenwriter and co-producer. The film will be shown at Toronto Japanese Film Festival and Brussels International Fantastic Film Festival 2014.[5]

In August 2015, Mizushima has been cast to appear in the 5th season of HBO's Girls, which aired on 2016. This is his first international TV appearance.[6]

Personal life[edit]

Mizushima is bilingual, being fluent in English and Japanese. He spent his whole elementary school years (1990 to 1996) in Zurich, Switzerland. He was bullied and discriminated as a child at International School in Switzerland. When he came back to Japan, he attended the junior high school and the high school of Toin Gakuen, and belonged to the soccer club of the school. When he was in the twelfth grade, he worked as a regular midfielder in The 81st All Japan High School Soccer Tournament.

Mizushima graduated from Keio University and has a degree in Environmental Information.

He married Japanese pop singer Ayaka on February 22, 2009. In December 2014, the couple announced through their agency that they are expecting their first child. In June 2015, Mizushima announced via Instagram that he had become a father. The couple has a daughter together.



Year Title Role Network Notes
2005 Gokusen (season 2) Hiro Misawa NTV
Ame to Yume no Ato ni TV Asahi Episode 7
Brother Beat Yoshi TBS
Pink no Idenshi Ikushima Mizuki TV Tokyo Episode 3
2006 Kamen Rider Kabuto Souji Tendou/Souji Kusakabe TV Asahi
2007 Kanojo to no Tadashii Asobikata Kyoji Fujiki TV Asahi
Watashitachi no Kyokasho Yahata Daisuke Fuji TV
Hanazakari no Kimitachi e Nanba Minami Fuji TV
Gutannubo (Gout Temps Nouveau) Drama Special Fuji TV
Churaumi Kara no Nengajo Kota Miyashita Fuji TV
2008 Zettai Kareshi Soshi Asamoto Fuji TV
Room of King Moriji/Jiro Mori Fuji TV
Hanazakari no Kimitachi e SP Minami Nanba Fuji TV
2009 Mei-chan no Shitsuji Rihito Shibata Fuji TV
Zettai Kareshi SP Soshi Asamoto Fuji TV
Mr. Brain Toranosuke Hayashida TBS
Tokyo Dogs Maruo Kudo Fuji TV
2016 Girls (season 5) Yoshi Kadokura HBO Episodes 3, 5


Year Title Role
2006 Hatsukare Ibushi
Lovely Complex Ryoji Suzuki
Kamen Rider Kabuto: God Speed Love Souji Tendou
2007 Kanojo to no Tadashii Asobikata Takeshi Fujiki
100 Scene no Koi Yoji/Sota/Kazuya
GS Wonderland Shun Masamiya
2009 Drop Tatsuya Iguchi
2010 Beck Ryūsuke Minami
2014 Black Butler Sebastian Michaelis



  • Kagerou (2010) ISBN 978-4-591-12245-7

Photo books[edit]

  • Hiro (January 2007)
  • With You (November 2007)
  • Hiromode (December 2008)
  • Water Island: Peace (December 2009)

Music videos[edit]


  1. ^ a b ポプラ社小説大賞 第五回 [5th Poplar Publishing Grand Prize for Fiction] (in Japanese). Poplar Publishing. 2010. Archived from the original on 2 November 2010. Retrieved 2 November 2010. Cite uses deprecated parameter |dead-url= (help)
  2. ^ 水嶋ヒロ「俳優やめない」夫婦で独立へ (in Japanese). Daily Sports. 24 September 2010. Archived from the original on 26 September 2010. Retrieved 7 November 2010. Cite uses deprecated parameter |deadurl= (help)
  3. ^ 水嶋ヒロに小説大賞!「第5回ポプラ社―」デビュー作で2000万円 [Hiro Mizushima wins 5th Poplar Prize for fiction: 20 million yen for debut work]. Sports Hōchi (in Japanese). The Hochi Shimbun. 1 November 2010. Archived from the original on 2 November 2010. Retrieved 1 November 2010. Cite uses deprecated parameter |deadurl= (help)
  4. ^ "Mizushima gives up Y20 mil award after winning literature prize". Whats On Xiamen. 2 November 2010. Retrieved 4 November 2010.
  5. ^ http://www.tokyohive.com/2013/01/mizushima-hiro-to-make-a-comeback-as-an-actor-with-black-butler-movie/
  6. ^ http://www.jpopasia.com/news/hiro-mizushima-to-appear-in-season-5-of-hbos-girls::18224.html
  7. ^ "インクレディブル・ハルク". Star Channel. Retrieved 31 August 2019.

External links[edit]