Water Release: Angry Bitter Rain

After water has been shot into the air, such as with the Water Release: Water Bullet Technique, this jutsu turns the water black. When the black water falls on a target it clings to their body and covers their eyes, blocking their vision. Because of the name ("doku" meaning "poison"), victims are intended to believe the water is poisonous. In truth the water is harmless, and the name is only meant to distract victims long enough for the user to follow up with another attack and/or escape.

Trivia

 * Although a novel-only technique, it is similar to Amaterasu and Black Lightning, as it is also a black-coloured elemental technique.