, better known by his pen name, is a Japanese playwright and screenwriter.
He was born in Tokyo on 21 December 1934. He attended Azabu High School and studied aesthetics at Tokyo University.[1] He then found work at Nippon Broadcasting System (NBS).[1] While an employee there, he also began submitting scripts for NBS radio programs under the pen name Sō Kuramoto, keeping his identity a secret from his employers. In 1963 he left NBS and began working as a freelancer.[1] He had troubles around NHK's teleplay Katsu Kaishū and escaped to Hokkaido. After staying in Sapporo, he moved to Furano in 1977.[2] In 1984 he established Furano Juku, a school for script-writers and actors.[3]