He debuted as a major label artist in 2009, with the single "Morning Sun."
[1] In 2006, Kiyoshi competed at the Teens Rock high school band music competition and won the grand prize, which led to his appearance at the Rock in Japan Festival summer festival in 2006, as one of his prizes.
[1][2] He debuted officially in 2009 under EMI Music Japan with the song "Morning Sun," which was used in a commercial campaign for cellphone provider AU.
[4] In 2010 Kiyoshi released his second album, World, led by the singles "Help Me Help Me Help Me" and "Itai yo.
"[1] After the release of the album, Kiyoshi held his first major tour across Japan.