For the
X television series, director
Yoshiaki Kawajiri decided not to explore Kamui's backstory early in the series and to focus more on his cold demeanor. Kawajiri considered Kamui weak because of how much it costs him to express emotions. As a result, he portrayed Kamui as a strong person, though his weakness becomes noticeable as the narrative progresses. Because Kamui did not have many lines in the original video animation, his voice actor,
Kenichi Suzumura, lacked a full impression of him before more of his character was explored in the television series. Suzumura found his role complicated because he understood Kamui is neither the weakest nor the strongest character. Voicing Kamui meant Suzumura debuted as a singer for an
X CD. Fuma's voice actor,
Junichi Suwabe, found voicing him difficult due to his dual personality: one kind, and the other cold-hearted. He also noted that the
X manga was very popular in Japan, and he wanted to meet audience expectations. Suwabe befriended Suzumura. Kotori's character was modified for the TV series as Kawajiri wanted to portray her as a more regular teenager in contrast to her weaker persona from the manga. The series was first announced by the original
manga creators, the artists group
Clamp, in October 2000. The script was handled by
Hiroko Tokita,
Kazuyuki Fudeyasu, Kenji Sugihara and Yuki Enatsu. Koshinori Kanemori adapted Clamp's character designs and served as art director along with Yuji Ikeda. The music for the series was composed by
Naoki Satō, with two
original soundtrack albums released on 19 December 2001 and 6 March 2002. The TV series uses two
theme songs: "eX Dream" by Masatoshi Nishimura (credited as "Myuji") is used as the opening theme, while "Secret Sorrow" by Kohei Koizumi is used as the ending theme. The OVA's ending theme is "STRENGTH" by Kouhei Koizumi. A common theme in
X involves how the future is predetermined to every person with Kamui's exception as he can choose a group to join. While the movie forces Kamui to face his biggest fear and slay Fuma, the television series explores Kamui's free will which he uses in the climax to solve the dilemma provided by the narrative.
Release In anticipation to the series premiere, an
original video animation (OVA) was produced: . It was directed-to-DVD on 25 August 2001. Written and directed by Kawajiri, the OVA tells the story of the upcoming battles through the prophecies of
Kakyō Kuzuki, dreamgazer for the organization Dragon of Earth, and acts as primer for viewers not familiar with Clamp's manga. The series premiered on 3 October 2001 on
WOWOW satellite television and finished on 27 March 2002, totaling twenty-four episodes. A total of twelve DVD volumes from the series, each containing two episodes, were released in Japan from 25 February 2001 to 25 January 2002, by
Bandai Visual.
Pioneer Entertainment (later Geneon USA) announced the English release of the series in North America in March 2002, with an English dub provided by
Bang Zoom! Entertainment. The episodes and the OVA were released in a total of eight DVD volumes between 24 September 2002 and 25 November 25 2003. Two DVD
box sets were also released on 11 January 2005. In 2006, Geneon released the
X TV Series Re-Mix, which was composed of five individual DVDs, released between 11 July and 14 November 2006; they also released a DVD box set including these five DVDs on 11 July 2006. The DVDs came with re-mastered video and audio, including remixed
5.1 Dolby Digital AC3 surround sound for both the Japanese and English tracks. They re-released the series on a DVD box set on 15 June 2010, using the original Geneon dubbing for the English-language audio track. The series was also streamed on
Hulu in 2010. ==Reception==