Imeno no Awai

Description
These are mushi that infest dreams. They cannot be truly separated from their hosts, and can cause the host's dreams to become reality. The effect is sometimes falsely assumed to be proof of prophetic ability; however, not all of the host's dreams come true. They live in the pillows of their hosts, and if the pillow housing the mushi is damaged or destroyed, the person the mushi associate themselves with is also harmed.

Weakness
Although powerful, they dissolve when exposed to light.