Ōsugi Sakae (大杉 栄, January 17, 1885 – September 16, 1923) was a prominent Japanese anarchist[1] who was jailed multiple times for his writings and activism.

He began to experiment with Christianity, associate with the Heimin-sha socialist group, and attend foreign language school.

[3] After graduating from foreign language school, Ōsugi was arrested during a Tokyo trolley fare increase demonstration in 1906 and later released on bail.

In the same time period, he met and began affairs with Ichiko Kamichika and Itō Noe.

[7] In June 1920 Osugi was contacted by the Korean Yi Ch'un-Suk, who persuaded him to come to Shanghai and meet with Asian Communists involved with the Far Eastern Bureau of the Comintern.