In Japanese folklore the Ame-onna, or "rain woman," is a baby snatcher.
An Ame-onna becomes an Ame-onna because her baby is stolen from her. Driven mad by grief, the woman is turned into this distraught spirit.
On rainy days, it's said that an Ame-onna can be seen looking bedraggled, soaked, and animal-like, licking the rain water off of her limbs. Carrying a large black bag, she seeks out infants to carry off with her. If she hears a baby crying in your home, she will even sneak in to carry it away.
The baby then potentially becomes another Ame-onna, and the mother is also in danger of being transformed.
