He coined the term Greater East Asia Co-Prosperity Sphere, which provided an official agenda for Imperial Japan's expansionism.

The circumstances surrounding his second marriage and his unsuccessful 1959 run for Governor of Tokyo served as the model for the novel After the Banquet by Yukio Mishima.

From 1938 to 1940, he and Konoe worked together to create the Greater East Asia Co-Prosperity Sphere, which deliberately outlined vague objectives for propaganda purposes.

[2] Arita ran for the office of Governor of Tokyo as a candidate of the Japan Socialist Party in 1955 and again in 1959, but lost both elections.

Terui decided to raise money for reopening her restaurant with the help of conservative figures such as Shigeru Yoshida and Eisaku Sato.

[2] The relationship between Arita and Terui, and the circumstances of the 1959 election served as the model for the novel Utage no ato (宴のあと, After the Banquet) by Yukio Mishima.