Itsumaden (いつまでん)

Name Meaning

Overview

Itsumaden (いつまでん) roughly translates to "how long?" or "until when?", referencing its eerie cries echoing that phrase as it flew over Kyoto at night.

Origin

  • Described in the Taiheiki, a historical chronicle from the 14th century.
  • Appeared during periods of war, famine, or unrest.
  • Symbolized lingering unrest and suffering in the capital.

Appearance

  • A monstrous bird with a snake-like body and a human face.
  • Large wings and talons capable of grasping victims.
  • Eyes full of grief and rage; its face is often said to resemble someone wrongfully killed.
Itsumaden yokai flying
Taiheiki bird spirit

Behavior & Myths

  • Flew above the city wailing, “Itsumade?” (“Until when?”), terrifying citizens.
  • Often interpreted as a ghost or unappeased spirit seeking justice.
  • Eventually dispelled by Buddhist monks through rites and prayers.

Symbolism

  • Represents unresolved grievances and the suffering of the innocent.
  • A metaphor for war's aftermath and the burden of neglecting the dead.
  • Also seen as a warning from the spirit world about societal corruption.
Itsumaden folklore creature
Wailing yokai bird

Japanese Culture Network

Japanese Wood Joints

Ancient joinery techniques of Japanese master craftsmen

ShrinePuzzle

Directory of Japanese board games and traditional games

Kohibou

Japanese coffee culture — kissaten, third wave and brewing guides

E2Japan

Explore Japan's landmarks, shrines and hidden locations

The 725 Club

SNES and Super Famicom collection tracker

Spaceship Adventures

Hoshi no Isan — a Japanese-aesthetic space RPG in development

Japan In Pixels

A pixel art map of Japanese culture — coming 2027

CSSKitsune

Japanese-aesthetic design tokens & AI-ready UI prompts