In Japanese folklore, Ōkubi are yōkai who appear as giant heads who appear in the sky shortly before a natural disaster. They can appear as male or female, and are said to be protective sky spirits, or the ghosts of people who have died during natural disasters.
The Ōkubi will disappear soon after appearing, and have heralded tsunamis, tornadoes, earthquakes and fires in the past, preventing dozens from dying.
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