Takeo Arishima was a Japanese novelist, short-story writer and essayist during the late Meiji and Taishō periods. His two younger brothers, Ikuma Arishima (有島生馬) and Ton Satomi (里美弴), were also authors. His son was the internationally known film and stage actor, Masayuki Mori.

Ton Satomi is the pen-name of Japanese author Hideo Yamanouchi . Satomi was known for the craftsmanship of his dialogue and command of the Japanese language. His two elder brothers, Ikuma Arishima and Takeo Arishima, were also authors.