週刊ヤングサンデー
He worked as an assistant to both Nobuyuki Fukumoto and Tsutomu Takahashi, and made his professional debut in 1998 in "Weekly Young Sunday" with his work , though his "Promised Land", which was a special selection at the 1997 Afternoon Four Seasons Awards, was technically his debut. Two works, "Umizaru" and "Say Hello to Black Jack" have been adapted very faithfully as television dramas and films.