Kimajo is an effect NPC that can be found on Witch's Island.
Overview
Kimajo resembles a dead tree with three holes for a face; one makes up the mouth (which moves up and down) and two act as eye holes from which two red pupils appear. It inhabits the farthest island to the left of the Witch's Island and grants the Witch effect upon interaction. It is completely immobile and can not be moved with the Cat effect. When the Stoplight effect is used, it will look downward and stop moving its jaw.
Kimajo when the Stoplight is used.
Video
File:Yume Nikki - How to get the Witch
The route to the creature and the Witch effect.