Picture a paper lantern covered in blue paper, so the light comes out cold and wrong. Inside it burn a hundred wicks. Guests take turns telling ghost stories. After each story, one wick is put out. The light dims, story by story, until only one wick is left — and then that one goes out too. Ao-andon, the "blue lantern," is the figure Edo-period artists imagined standing in the dark that follows.
What does it look like?
Toriyama Sekien's print shows a demon-woman with horns and blackened teeth. Her long black hair hangs loose in the manner of a yūrei. She wears a plain white kimono, the same funeral-white associated with Japanese ghosts generally. She stands behind the andon lamp that gives her and the game their name. Around the lamp lie a comb, sewing tools and letters. There is no burning house or flooded river. Sekien draws her the way she was meant to be encountered: alone, in a room that has just gone dark.
The game that summoned her
Hyakumonogatari Kaidankai — "the gathering of a hundred supernatural tales" — began as a test of nerve among samurai households before it spread to merchants and townspeople in the seventeenth and eighteenth centuries. The rules were simple and specific: light a hundred wicks, often in an andon lamp covered with blue paper, then take turns telling kaidan, real or borrowed accounts of ghosts and strange happenings. After each story, the teller — or sometimes each guest in turn — put out one wick and, in some versions of the game, walked alone to a darkened room to check their reflection in a mirror before returning. As the count climbed toward a hundred, the room grew darker, the stories grew stranger, and the tension in the circle grew with it. Reaching the hundredth story and putting out the final wick was widely believed to invite something into the room. Many hosts stopped at ninety-nine on purpose.
Where it comes from
Sekien's caption says the ao-andon is something told "since long ago." Some scholars read the name as a label for whatever appears after the hundredth tale. Konjaku Hyakki Shui (1781), the book where she first appears, is the third volume of his four-part Gazu Hyakki Yagyo series, and across that catalog Sekien regularly worked the other direction — starting from a word, a pun, or a piece of everyday material culture and inventing a face to go with it. Many readers see Ao-andon as that kind of invention: the game already had its blue lantern, and Sekien gave it a body. What he was illustrating may be less a creature than the dread the game itself was built to produce — the specific fear of being the one left in the room when the last light goes out. Because his prints were copied and referenced for generations afterward, his figure came to be treated as folklore in its own right, the same way several of his other Konjaku entries did.
See the original print
Toriyama Sekien drew Ao-andon in Konjaku Hyakki Shūi (1781). This book has that picture, with its caption in English.
- Japandemonium Illustrated: The Yokai Encyclopedias of Toriyama Sekien →trans. Hiroko Yoda & Matt AltThe complete Edo-period bestiaries that so many of these entries trace back to, in full English translation.
- The Book of Yokai →Michael Dylan FosterThe most readable scholarly introduction to yokai — where they come from, what they mean, and the major creatures.
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Ao-andon today
The hyakumonogatari game itself faded as electric lighting made a fully dark room harder to arrange, but Ao-andon has kept turning up as a character in her own right. She appears as a collectible shikigami in the long-running mobile game Onmyoji, cast fittingly as a spirit with an affinity for storytelling, and she shows up as a mini-boss encounter in Ubisoft's 2025 title Assassin's Creed Shadows, set in Sengoku-era Japan. Both keep the core image Sekien drew nearly two and a half centuries ago: horns, and a woman standing in blue light where the last lamp used to be.
