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Prince Sawara: Origin of Japan's Onryo Tradition and Heian Move
Prince Sawara (?-785), brother of Emperor Kanmu, starved to death en route to exile in Awaji after being implicated in the assassination of Fujiwara Tanetsugu. His vengeful spirit, blamed for subsequent calamities, became one of Japan's "three great onryo" and a driver of the Heian capital relocation.
武
Author
Taketoki
| Samurai History
Prince Sawara (d. 785), brother of Emperor Kanmu, was the heir apparent until he was implicated in the 785 assassination of Fujiwara Tanetsugu. Stripped of his rank and confined at Otokunidera, he was sentenced to exile in Awaji and starved himself to death en route. Subsequent calamities at court — the deaths of the empress, prince, and the emperor’s mother — were attributed to his vengeful spirit, leading the court to posthumously promote him to “Emperor Sudo” and build Goryo (vengeful-spirit) shrines. His case is considered the origin of Japan’s onryo tradition and a key motivation for the 794 relocation to Heian-kyo (Kyoto). Kamigoryo Shrine in Kyoto enshrines him as its principal deity.
Last updated: May 2, 2026
Kamigoryo Shrine in Kyoto — enshrining Prince Sawara as its principal deity
Wikimedia Commons / CC BY-SA 3.0
Otokunidera — where Prince Sawara was confined while protesting his innocence
Wikimedia Commons / CC BY-SA 3.0
Sudo Shrine in Kyoto — dedicated to Emperor Sudo (Prince Sawara)
Wikimedia Commons / CC BY-SA 3.0
Model of Heian-kyo — built to escape the wrath of Prince Sawara's spirit
Wikimedia Commons / CC BY-SA 3.0
Awaji Island — the original burial place of Prince Sawara
Wikimedia Commons / CC BY-SA 3.0
── 了 ──
武
Author
Taketoki（たけとき）
Samurai History
Toku editorial team — samurai history. Insists on primary sources and castle-layout diagrams, walking battlefields from Yoritomo's Izu exile sites to the late-Edo battlegrounds.
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