On / Off ( Japanese band ) - wikipedia On / Off ( Japanese band ) For other uses, see On - off ( disambiguation ). On / Off Also known as On / Off Origin Japan Genres Jpop Years active 2007 - 2015 Labels Music Ray'n Inc., DefStar Records Website www.onoff-net.com Members Naoya Sakamoto Kazuya Sakamoto On / Off ( stylized as ON / OFF ) is a Japanese Jpop duo which consists of twin brothers, Naoya Sakamoto ( 坂本 直弥, Sakamoto Naoya ) and Kazuya Sakamoto ( 坂本 和弥, Sakamoto Kazuya ). The duo debuted in 2007 releasing the single `` Eien no Setsuna '' ( 永遠 の 刹那, `` Eternal Moment '' ). Contents 1 History 2 Discography 2.1 Albums 2.2 Singles 3 References 4 External links History On / Off debuted on November 21, 2007 with `` Eien no Setsuna '' ( 永遠 の 刹那, `` Eternal Bond '' ), 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 `` Futatsu no Kodō to Akai Tsumi '' ( ふたつ の 鼓動 と 赤い 罪, `` Two Beats and a Red Sin '' ) 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, `` Rinne : Rondo '' ( 輪廻 - ロンド -, `` Cycle : Rondo '' ) ( October 2008 ) that became the opening of the second season anime of Vampire Knight and `` Hana Kagari '' ( 花 篝 - ハナカガリ -, `` Hanakagari : 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 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 ' Discography Albums Year Album details Chart positions JP 2009 Legend of Twins I : Futago Densetsu Released : April 22, 2009 Label : Music Ray'n Inc. Formats : CD, CD + DVD, Box set 2011 Legend of Twins II : Legendary Twins Continues ' Released : December 7, 2011 Label : Music Rayn ' Inc. Singles Year Title Chart peak 2007 `` Eien no Setsuna '' release date - 21st Nov 2007 2008 `` Futatsu no Kodō to Akai Tsumi '' release date - 4 June 2008 `` Rinne : Rondo '' release date - 15th Oct 2008 2009 `` Hana Kagari '' release date - 4 March 2009 2010 `` Butterfly '' release date - 9 June 2010 15 2011 `` Hajimaru no wa, Sayonara '' release date - 27 April 2011 31 References Jump up ^ `` Eien no Setsuna 's Oricon page '' ( in Japanese ). Oricon. Retrieved 2009 - 04 - 27. Jump up ^ `` Futatsu no Kodō to Akai Tsumi 's Oricon page '' ( in Japanese ). Oricon. Retrieved 2009 - 04 - 27. Jump up ^ `` Rinne : Rondo 's Oricon page '' ( in Japanese ). Oricon. Retrieved 2009 - 04 - 27. Jump up ^ `` Third week of March 's Oricon chart ''. Oricon. Retrieved 2009 - 04 - 27. Jump up ^ `` Official Durarara ! ! site - Staff&Cast '' ( in Japanese ). durarara.com. Archived from the original on July 10, 2011. Retrieved March 15, 2010. Jump up ^ `` On / Off Oricon discography '' ( in Japanese ). Oricon. Retrieved 2009 - 04 - 27. External links Official website ( in Japanese ) On / Off discography at MusicBrainz Authority control MusicBrainz : 8409227a - 1e7d - 4536 - 80cd - 933a82d5bc14 Retrieved from `` https://en.wikipedia.org/w/index.php?title=On/Off_(Japanese_band)&oldid=829754495 '' Categories : Japanese pop music groups Defstar Records artists Musical groups from Fukuoka Prefecture Japanese boy bands Hidden categories : CS1 Japanese - language sources ( ja ) Articles with hCards Articles containing Japanese - language text Articles with Japanese - language external links MusicBrainz artist same as Wikidata Articles with MusicBrainz artist links Wikipedia articles with MusicBrainz identifiers Talk Article Talk More Contents About Wikipedia Español Italiano 日本 語 Português ไทย 中文 Edit links This page was last edited on 10 March 2018, at 16 : 45 ( UTC ). Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: who sings the theme song for vampire knight
Answer: On/Off