Seiru

Seiru
清流
Seiru; 清流
	Seiru in 1941
Prince of Teiko
Reign	5 December 1941 – 16 March 1959
Enthronement	16 March 1942
Predecessor	Hideyoshi
Successor	Tsuyosho
Daijō-daijin	See list Yoshimatsu Okada; Hayato Ichimonji; Yuzuru Otonashi; Ryuichi Akashi; Kamanosuke Yuri; Kakushi Gotou; Shinji Matou; Kouzo Akashi;
Born	Seiru (清流); 2 December 1878; Kaijo, Teiko
Died	16 March 1959 (aged 80); Kaijo, Teiko
Spouse	Kasumi Fujita (m. 1906)
Issue	Tsuyosho, Prince of Teiko; Masayuki, Prince of Teiko; Haru, Prince Beomgyu;
House	Royal House of Teiko
Father	Akihiro
Mother	Ayano Edamura
Religion	Shinto

Seiru (清流, Seiru, 2 December 1878 – 16 March 1959) was the 4th Prince of Teiko reigning from 5 December 1941 until his death on 16 March 1959. He was succeeded by his eldest son, Tsuyosho.

Seiru has been considered by many historians as the most controversial Teikonian prince. Multiple new historical documents have asserted that Seiru played an active role in the 1941 political chaos that led to the assassination of his brother, Hideyoshi, and several high ranking government officials including Daijō-daijin Genbu Kururugi as well as the installation of a fascist government led by Yoshimatsu Okada.