On/Off (Japanese band)
On/Off (stylized as ON/OFF) is a Japanese musical duo consisting of twin brothers and . The duo debuted in 2007 releasing the single . History. On/Off debuted on November 21, 2007 with , which was used as the ending theme song the live-action adaptation of "Fūma no Kojirō"; they were also a part of its cast. The single debuted at number 59 on the Oricon charts. Following the release of "Eien no Setsuna" was their second single on June 4, 2008. The single achieved more success than their debut single charting at number 19 on  the charts. "Futatsu no Kodō to Akai Tsumi" was used as the opening theme song for the first season of anime series "Vampire Knight". The duo released two singles, (October 2008) that became the opening of the second season anime of Vampire Knight and (March 2009), before releasing their debut album on April 22, 2009. The former charted at number 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. Their single "Butterfly" was also used in the anime "Durarara!!" as the ending  theme song. Their new singles "Hajimaru no wa, Sayonara" was used as second opening for anime series "Beelzebub" and was composed and produced by popular J-pop artist Daisuke Asakura. On 2/11/11 they release their new single 'Akatsuki' and on 7/12/11 is the release of their new album 'Legend of Twins II : Zoku Futago Densetsu'