Sanshichu

Sanshichu (三尸蟲,) are insect Kemono that feed on guilt.

Description
Sanshichu are eight-legged insects resembling ticks. On their back is pattern and stripes on the side of their bodies. They are relatively harmless bugs, usually eating a bit of human skin while they are sleeping. However, the Sanshichu have a favorite food; the feeling of guilt. A large swarm can form once a source of deep guilt is made. If someone tries to take their food away, they see them as a threat and will attack them.

Abilities
Sanshichu can inject anesthesia into the bloodstream to paralyze anyone getting in their way and doing so to their victims before eating them.