myspace: @naoya_kazuya ON/OFF duo consists of the Sakamoto (坂本) twins, Naoya (直弥) and Kazuya (和弥). Naoya is older twin brother and Kazuya is younger twin brother.
theme song performance (ed2)
TV anime / 2010
theme song performance (op)
TV anime / 2008
theme song performance
Special / 2010