ON/OFF is a Japanese pop duo formed by Sakamoto twin brothers and signed to Sony Music Entertainment. They are best known for singing the opening themes of the two seasons of the anime Vampire Knight.
Sakamoto Naoya and Sakamoto Kazuya were born December 10th. 1983 in Fukuoka. ON/OFF made their major debut in 2007 under the Sony Music Entertainment label with the single "Eien no Setsuna". The title track was used as the ending theme for fantasy drama Fuma no Kojiro in which ON/OFF also had starring roles. In June 2008, ON/OFF released their second single, "Futatsu no Kodou to Akai Tsumi", which was used as the opening theme for the anime Vampire Knight. Following "Futatsu no Kodou to Akai Tsumi", they released "Rondo", Vampire Knight Guilty opening theme in November 2008. In April 2009, ON/OFF released their debut album Legend of Twins I -Futago Densetsu-.
- [2009.04.22] Legend of Twins I -Futago Densetsu- (双子伝説; Legend of Twins)
- [2011.12.07] Legend of Twins II -Zoku Futago Densetsu- (続・双子伝説)
- [2016.02.06] ON/OFF KARAOKE Collection
- [2007.01.26] yokogao (indie)
- [2007.11.21] Eien no Setsuna (永遠の刹那; Eternal Moment)
- [2008.06.04] Futatsu no Kodou to Akai Tsumi (ふたつの鼓動と赤い罪; Two Beats and the Red Sin)
- [2008.10.15] Rondo (輪廻 -ロンド-)
- [2009.03.04] Hana Kagari (花篝 -ハナカガリ-; Bonfire Flower)
- [2010.06.09] Butterfly
- [2011.04.27] Hajimaru no wa, Sayonara (始まるのは、サヨナラ)
- [2011.11.02] Akatsuki (暁 ; Dawn')
- [2015.02.01] Replace (リプレイス)
- [2012.06.20] Otokotachi no Ballad / Saraba Tomoyo (男達のバラード / さらば友よ)
- [2010.01.xx] ARENA 37 Degree Special 2010 March Issue (Feature)