Hitodama.

Hitodama (人魂, ひとだま) are among the simplest and most culturally powerful supernatural forms in Japanese tradition. They appear as small drifting flames, often blue-white, pale yellow, or faintly phosphorescent, moving in darkness without an obvious source. Because the form is so minimal, the meaning does most of the work. These are not just strange lights. They are understood as the soul of a human being made briefly visible after death.

That interpretive weight distinguishes hitodama from other ghost fires. The flame is slight, but the event is profound. To see a hitodama is to witness transition, the moment when personhood has not yet settled fully among the dead and still leaves a trace in the world of the living.

Hitodama usually do not attack. They hover, drift, depart, or pass by at moments tied to death and mourning. People report them at bedside when someone dies, near coffins, above graves, or moving along roads after a funeral procession. The encounter is therefore not typically one of combat or ambush. It is a contact with the fact that the dead have not yet become entirely invisible.

Because of that, hitodama belong equally to folklore and ritual imagination. They can frighten, but they can also confirm what mourners already suspect, that the soul has left the body and is on its way elsewhere. In stories of haunting, they may precede or accompany a ghost, but even then they remain signs of passage more than monsters in their own right.