Birth place: Amagasaki, Hyogo Prefecture, Japan
After leaving Osaka Industrial University, Yagami Yu moved to Tokyo. There, in 1991 he debuted as a mangaka with his work Higawari Yagami Land. At some point he worked as Kinutani Yuu's assistant. He is also known as a member of the karate organisation Kendoukai. In 2011 he was a countrywide champion in the masters kumite division.