Debuting as a member of the Hokkaido rock band Galileo Galilei in 2009, he left to form a new musical unit, Folks.
[3][4][5] The group performed at rock events in Sapporo from 2007 onwards, and self-produced an extended play, Shinzō (心臓, "Heart"), in August 2008, followed by a self-released single called "Tsubasa" (ツバサ, "Wings") in February 2009.
[12] In March 2011, the band relocated to Sapporo, and the bandmates started living together, calling their home Galileo House.
[13] In Galileo Galilei, Ozaki was the main lyricist songwriter, and would give ideas to Iwai and other band members to work on further.
[16] In 2012, Iwai and Noguchi returned to Hokkaido to set up their own band, and asked former Guild member Yoshitomo Kobayashi to join.