Oni of Rajōmon (Rashōmon Demon)（rah-JOH-mohn no OH-nee）
Oni of Rajōmon (Rashōmon Demon)
rah-JOH-mohn no OH-nee
Oni of Rajōmon (Rashōmon Demon)
rah-JOH-mohn no OH-nee
Basic Description
A demon said to have haunted Rajōmon, the main gate of Heian-kyō. It is famed from the tale in which Minamoto no Yorimitsu’s retainer Watanabe no Tsuna rode out alone to confront it and cut off its arm after a fierce struggle. Variants appear in The Tale of the Heike, which shifts the scene to Ichijō Modori-bashi, while the Noh play Rashōmon places the fight at the gate. The later story of the demon returning to reclaim its severed arm branches into Ibaraki and is often identified with the oni Ibaraki-dōji.
Folklore & Legends
At a banquet, Watanabe no Tsuna hears rumors of a demon at Rajōmon and rides there alone. In a violent gust of wind he clashes with the oni and cuts off its arm. The demon retreats, vowing to bide its time and take the arm back. In The Tale of the Heike, the arm is severed at Ichijō Modori-bashi; later, the demon disguised as an old woman visits Tsuna and recovers the arm. The Noh play Rashōmon sets the battle at the gate, while Ibaraki tells the tale of the demon’s revenge. The story spread across Japan as a warrior’s bravura legend.
An oni that appears at Rashomon Gate and on the outskirts of the capital, serving to highlight a warrior’s valor. Medieval war tales and Noh plays preserve multiple versions with differing stages and details, but the core remains: a lone warrior meets an oni at a gate or bridge and severs its arm. The arm is treated as a symbol of impurity and numinous power, leading to later tales of its recovery. Its conflation with Ibaraki-dōji intensified in early modern retellings, shifting names and locales, yet overall it embodies a liminal threat haunting the edges of the capital. Iconography shows an iron staff, horns, red-black skin, and wild hair, often set amid stormy weather and black clouds. Representations rooted in warrior lore, Noh, and picture scrolls continue to shape its image today.
Character Profile
This section is our own creative profile for storytelling. It is not historical fact or scholarship.
fierce and relentless, vengeful, cunning enough to bide its time
Compatibility
clashes with warriors and martial champions, inspires fear among city dwellers
Abilities
matches warriors with brute strengthbludgeoning with iron staff and superhuman forceshapeshifting to deceive such as appearing as an old womanfeared to arrive with gales and black clouds
Weaknesses
falls to a single stroke of a famed blade or to Buddhist ritual power, weakened if its severed arm is bound or sealed away
Habitat
around Heian-kyō and Rashomon Gate, liminal edges of the capital, bridges depending on the source
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