Emperor Sutoku- Japanese SpiritSpirit"King of the Tengu"

Exile and Blood Sutras

Emperor Sutoku ascended the throne as a child but was forced to abdicate in favor of his younger half-brother, and his subsequent attempt to reclaim power through the Hōgen Rebellion of 1156 ended in swift defeat. Exiled to Sanuki Province on Shikoku, he withdrew from the world and devoted himself to copying Buddhist sutras as acts of piety and repentance. He completed five major sutras and sent them to the capital, hoping they would be accepted as devotional offerings at the great temples.

The court refused them, returning the scrolls with the suspicion that they might carry curses. According to the Hōgen Monogatari and later accounts, this rejection shattered Sutoku's spirit. In fury and despair, he bit off his tongue and wrote a terrible oath in his own blood upon the returned sutras, vowing to become a great demon and drag the emperor down to the realm of the commoner, and raise the commoner to the throne. He let his hair and nails grow wild, refused food, and took on the appearance of a living tengu. He died in exile in 1164 without ever returning to the capital.

The Great Vengeful Spirit

Calamity followed quickly. Within years of Sutoku's death, fires swept the capital, the Heiji Rebellion convulsed the court, and the Taira-Minamoto wars plunged Japan into civil war. Popular belief attributed these disasters to Sutoku's curse. He became the most feared of the Nihon San Dai Onryō, the Three Great Vengeful Spirits of Japan, alongside Sugawara no Michizane and Taira no Masakado.

The court took his curse seriously. Rituals were performed to pacify his spirit, and he was eventually enshrined at Shiramine-gū in Kyoto. In 1868, Emperor Meiji formally transferred Sutoku's spirit from its Sanuki shrine to the new Shiramine Jingū before the capital moved to Tokyo, an act intended to reconcile the ancient wrong. Ueda Akinari's "Shiramine" in the Ugetsu Monogatari portrays a midnight encounter with Sutoku's ghost at his grave mound, where the dead emperor debates the justice of heaven with a visiting priest, his rage undimmed by centuries.