ON/OFF are composed of twins brothers by the name of Naoya & Kazuya Sakamoto. Naoya is the older twin. They made their debut when they starred in Fuma no Kojiro as Kou & Shoryu. They also sang the ending theme, Eien no Setsuna, for this drama.

They also sang the opening theme, Futatsu No Kodou To Akai Tsumi, for Vampire Knight and also,Rinne-Rondo, for the second season of Vampire Knight: Guilty.

The duo released two singles, "Rinne: Rondo" (輪廻－ロンド－, Cycle: Rondo?) (October 2008) and "Hana Kagari: Hana Kagari" (花篝－ハナカガリ－, Bamboo Flower: Bamboo Flower?) (March 2009), before releasing their debut album Legend of Twins I: Futago Densetsu (Legend of Twins I－双子伝説－, Legend of Twins I: The Legend Twins?) on April 22, 2009. The former charted at #18 on the charts and was used as the opening for the second season of Vampire Knight; while the latter failed to chart on the Top 30[edit]Last edit by espi0na9...

ON/OFF are composed of twins brothers by the name of Naoya & Kazuya Sakamoto. Naoya is the older twin. They made their debut when they starred in Fuma no Kojiro as Kou & Shoryu. They also sang the ending theme, Eien no Setsuna, for this drama.

They also sang the opening theme, Futatsu No Kodou To Akai Tsumi, for Vampire Knight and also,Rinne-Rondo, for the second season of Vampire Knight: Guilty.

The duo released two singles, "Rinne: Rondo" (輪廻－ロンド－, Cycle: Rondo?) (October 2008) and "Hana Kagari: Hana Kagari" (花篝－ハナカガリ－, Bamboo Flower: Bamboo Flower?) (March 2009), before releasing their debut album Legend of Twins I: Futago Densetsu (Legend of Twins I－双子伝説－, Legend of Twins I: The Legend Twins?) on April 22, 2009. The former charted at #18 on the charts and was used as the opening for the second season of Vampire Knight; while the latter failed to chart on the Top 30

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