子とろ子とろ
ことろことろ

Translation: child taker
Alternate names: shito onna (jealous woman)
Habitat: homes with children
Diet: babies

Appearance:  Kotoro kotoro look like monstrous, half-naked women with long black hair. They crawl around houses on all fours and hunt little children.

Behavior: When a woman is overcome with jealousy towards another woman—for example a romantic rival—she may transform into a monster called a kotoro kotoro. These yōkai are motivated by a jealous grudge to target the children of the women they are jealous of. They sneak into the room where the child sleeps, then devour them and crawl away, carrying mangled parts of their blood-soaked victims in their mouths like a cat that has caught a mouse.

Origin: Kotoro kotoro appears in the Tōsa bakemono zōshi, an anonymous Edo period scroll containing various yōkai from Tōsa Province (present-day Kōchi Prefecture).