Tradition / Region: Japan (Ehime Prefecture and other regions)
Alternate Names: —
Category: Object/ yōkai
The Myth
The Jatai is said to appear at night as a living obi, a kimono sash that moves on its own like a great snake. By day it is nothing more than a length of cloth, but after night falls it slithers from its resting place, coiling and gliding through rooms in search of victims.
According to old folk belief, if a person lays an obi near their pillow while sleeping, they may dream of snakes. From this belief grew the story that the obi itself can transform. Because the word for a snake’s body sounds the same as the word for a wicked heart, the sash was believed to awaken as a murderous being. In this form it becomes the Jatai, a dangerous tsukumogami born from jealousy and malice.
The Jatai is especially associated with an obi once worn by a jealous woman. After long use, the resentment bound into the garment gives it life. When it hunts, it wraps itself around sleeping men and strangles them in their beds.
The creature is described as a poisonous snake, long enough to coil itself around a person seven times. This detail is remembered as part of its fearsome nature and its unnatural length. Once the Jatai has tightened its coils, escape is said to be impossible.
The Jatai is depicted in Toriyama Sekien’s Konjaku Hyakki Shūi, where it appears as a living sash transformed into a deadly serpent. Through these tales, the Jatai is remembered as a reminder that strong emotions can linger in objects, waiting for the moment when they take on a life of their own.