DOPPEL, an experimental music unit consists of mitsu（Ｄｏｌｌｙ）on vocal and yuina（WORLD WRAP WORD）on guitar. The unit debuted in February 2nd, 2013 under the Moonlight Records label. Official Site: http://doppel.jp/pc/ Twitter: mitsu: https://twitter.com/official_mitsu, yuina: https://twitter.com/yuina_official