is the pseudonym of , a well-known director of anime. He works frequently with the animation studio Madhouse (which he co-founded), though he is a freelance director not employed directly by any one studio. He began working in the animation industry—at age 17—as an in-between animator on the 1958 film Hakujaden. His works have won and been nominated for multiple awards, including a nomination for Best Film (Metropolis) at the 2001 Festival de Cine de Sitges.