After his father, who was known as a legendary rock musician, died of pulmonary edema at the age of 26, Ozaki and his mother moved to Boston, United States.
Ozaki graduated from American School in Japan in June 2008 and attended Keio University Faculty of Environment and Information Studies in 2008.
His first extended play Let Freedom Ring was released in March 2017 to a commercial success, reaching number twenty-one in Japan.
His second extended play Seize the Day was released in October 2017 and peaked number thirteen in Japan.
In September 2018, Ozaki announced that he would release a new single, "Kono Sora wo Subete Kimi ni" (この空をすべて君に).