Aoandon.

Aoandon (青行燈, あおあんどん) is less a beast than a culminating apparition. It is commonly imagined as a womanlike ghost or shadowy presence emerging from cold blue lantern light, with loose dark hair, pale skin, and a room already drained of safety by the stories told within it. The figure can be slender and almost elegant, but the lamp's unnatural glow makes it clear that this is not an ordinary visitor.

The visual power of aoandon comes from concentration rather than movement. Unlike a road spirit or attacking monster, it appears in a room where people have prepared the conditions for fear. The body and the lantern belong together. The spirit seems to condense out of the final light itself, as if story, expectation, and darkness have become visible at the same instant.

Aoandon is bound to the hyaku monogatari kaidankai, the game in which one hundred strange tales are told while lights are extinguished one by one. Its role is to appear at the dangerous threshold where performance may become reality. Because of that, the encounter is collective. The spirit comes not to a solitary wanderer but to a group that has chosen, together, to make a room hospitable to haunting.

Many tellings suggest that players stop short of the final tale precisely to avoid whatever would answer the last extinguished light. Aoandon therefore functions as a warning built into the ritual of storytelling itself. The more carefully the game is staged, the more convincingly the room can become a place where an invited presence actually arrives.