Masaki played since middle school to high school as a handball player in her school club, being even selected in the U-16 Junior Team of Japan. After high school she attended a music school in Tokyo, where she became interested in African-American music.[2]
After her graduation, she took her first steps as a singer performing in clubs and concert halls in Tokyo. With an average of ten appearances per month Masaki attracted attention from Japanese and even Korean record companies,[2][3] until she finally signed her contract with Universal Music Japan.[2]
On 16 February 2011, she released her first single, "Last Kiss", a duet with the Japanese singer KG.
