Enenra/Enen-Ra/Enra-Enra

The Enenra is a Yokai from Japanese myth. They have no physical form and appear in smoke from fires. Their amorphous form may resemble animals or people and fade in and out of sight as the smoke shifts. They are completely harmless but very frightening, and are considered especially disturbing when they emerge from the smoke of someone being cremated.

Citations:

Bane, Theresa. Encyclopedia of Beasts and Monsters in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.