仮面ライダーキバ
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 the second ending theme for "Kamen Rider Kiva".