仮面ライダーキバ
After taking a short vacation in Europe, Kawamura reunited with Inoran and Hiroaki Hayama to announce the formation of their band Tourbillon in 2005. Their first official concert was held at the Nippon Budokan on July 2 and it received good attendance and reviews. The band would release two albums, "Heaven" and "A Tide of New Era" in 2005 and 2006, respectively. In March 2008, Tourbillon's single "Break the Chain" was used as an opening theme of "Kamen Rider Kiva".