On/Off

Biography

On/Off (stylized as ON/OFF) was a Japanese musical duo consisting of twin brothers Naoya and Kazuya Sakamoto. The duo debuted in 2007 with the single "Eien no Setsuna" (永遠の刹那; "Eternal Moment").

2007–2011

On November 21, 2007, On/Off debuted with the single "Eien no Setsuna", which was used as the ending theme song the live-action adaptation of Fūma no Kojirō. The single debuted at number 59 on the Oricon charts.
On June 4, 2008, they released their second single "Futatsu no Kodō to Akai Tsumi". The single charted at 19. "Futatsu no Kodō to Akai Tsumi" was used as the opening theme song for the first season of anime series Vampire Knight.
On October 15, the duo released the single, "Rinne: Rondo", which became the opening song for Vampire Knight's second season.
On March 4, 2009, the duo released their single "Hana Kagari", which charted at number 18. On April 22, the two released their debut album ''Legend of Twins I: Futago Densetsu''.
On June 9, 2010, they released their single "Butterfly", which was also used in the anime Durarara!! as its ending theme song.

2011–2015

On February 11, 2011, they released their new single "Akatsuki". On May 4, they released their second single "Hajimaru no wa, Sayonara", which was used as second opening for anime series Beelzebub and was composed and produced by popular J-pop artist Daisuke Asakura.
On December 7, they released their last and final work, their second album 'Legend of Twins II: Zoku Futago Densetsu'.
In 2015, On/Off broke-up with the brothers pivoting to other careers.

Members

Naoya Sakamoto (坂本 直弥, Sakamoto Naoya)
Kazuya Sakamoto (坂本 和弥, Sakamoto Kazuya)