In 1970, he was sentenced to death by his former fellow members for leaving the Japanese Trotskyist League.
He and the leader of the Ainu Liberation League were both arrested for inciting a riot and they continuously blamed each other.
[citation needed] In 1986, he authored a book called Japan Ecologist Proclamation, in which he proclaimed that "we must overthrow all human dictatorship!
[citation needed] In the 1990s he became known as one of the principal publishers of antisemitic materials and Jewish conspiracy theories in Japan, as well as controversial writings on the destructive effects of Westernisation, including the aesthetic and moral superiority of Japanese women over Western women.
He was the leader of the following associations: He was also the author of UFO Theory and Space Civilization: Prospects for 21st Century Science.