鬼火

The Onibi is a deadly Japanese ghost-fire yokai that appears in graveyards and wetlands at night. It looks like a small orb of flame, usually blue or bluish-white, that stays in the air at eye level. The orbs go apart, move far away, and come together again, often in groups of twenty to thirty. Living creatures that come too close are attacked by the swarm, which steals their life force and leaves a husk on the ground. Travelers should stay on marked paths and ignore distant lights at night.