Tetra-Fang (stylized as TETRA-FANG) is a Japanese pop-rock band considered a "limited rock unit" and was formed to perform songs on the soundtrack for the 2008 Kamen Rider Series Kamen Rider Kiva.
History
Tetra-Fang was formed in 2008 to serve as a promotional band for Kamen Rider Kiva. The group composes music in a rock style and features a rotating line-up of members for each of their singles. Koji Seto who portrays Wataru Kurenai, the lead character in Kamen Rider Kiva, serves as Koji, the lead vocalist of the group for the single releases of "Destiny's Play" and "Individual-System." "Destiny's Play" was released on April 23, 2008, and came with a DVD containing a music video for the song. The single ranked 25th on the Japanese Oricon Weekly Single's Charts in its first week. "Individual-System" was released on June 25, 2008, and was be the second ending theme for Kamen Rider Kiva.
An arrangement of "Individual-System" was released one month after the initial release of the original version on July 30, 2008, and featured Keisuke Kato on vocals, known as "Fight for Justice: Individual-System Nago Ver.". Also, on August 6, 2008, a mini-album was released, Supernova, after the song of the same name used as Emperor Form's theme song. It also features character songs for Garulu, Basshaa, and Dogga, two of which have been featured as the ending theme in the series.
In early December, the band released their first and only fully original album entitled Destiny. The album contained numerous character songs written by previous tokusatsu song writers including Ryo and Shuhei Naruse. The album also included the tracks Destiny's Play, Individual System, Roots of the King and Supernova from previous releases.
Also in December, another album was released called Inherited System, which contained character songs sung by actors who have used the IXA System in the TV series. Two Tetra-Fang songs were included in the release, which were Individual System and Fight for Justice.
The group officially disbanded after Kamen Rider Kiva had completed it's broadcasting, however both keyboardist Shuhei and guitarist Ayano continue to be involved in the musical side of the Kamen Rider franchise. Shuhei and Ayano reunited as part of the Kamen Rider Decade series, producing three albums of cover versions of previous Kamen Rider theme songs. The songs arranged by Shuhei featured Ayano on guitar. Both musicians also are part of the Kamen Rider Double series, composing and playing on several songs featured in the series.
The popularity of the group however resulted in a reunion for a final album consisting mostly of covers of previous Tetra-Fang songs. The album however, entitled Masked Rider Kiva Destiny's Play Re-Union, did include three original songs; two sung by Kivat and the final track sung by Wataru and Otoya as a duet.
