Akashita

Akashita (赤舌, Aka-shita) literally translates from Japanese as "red tongue".

In Japanese folklore, a demon taking the form of a dark cloud with clawed paws and a terrible, hairy muzzle. He has a long red tongue in a wide mouth. Akashita brings bad luck and harm with it. He attacks those who stole water from neighbors (first he drinks all the water from their field, and then grabs them with his long red tongue). 

Akashita appears in the summer months, when rains are vital for a good harvest.

In the esoteric direction Ommedo, Akashita was one of the six spirits of the Japanese calendar (赤口, "red mouth"). It was associated with sakuzetsu-jin (赤舌神), who guarded the western gate of Jupiter and sakuzetsu-niti (赤舌日) — the day of bad luck and pestilence.