Haino no Oni

Haino no Oni, the "Demon of Water Drainage", was a supai oni whose attack provoked to feel very thisty.

Appearance
The oni in its true form resembled bald, twisted hags with oversized mouths and insect-like eyes. It was a shapehisfter which could take the form of attractive young street­ walkers, letting them move among eta while corrupting samurai.

Abilities
Haino no Oni used its long, thread-like tongue to suck the viscera of its victims. The tongue secreted a local anesthesia to painlessly slip into a sleeping victim's orifices to siphon their Water (saliva, blood, and other bodily fluids).