Gyochu, a deadly critter responsible for leprosy, acts as a messenger to the underworld. On the night of Koshin-no-hi (an important date occurring every 60 days on the Chinese calendar), Gyochu leaves the body to visit Enma-daio (Lord of the Underworld) and tell him of your misdeeds. Enma-daio is known to punish people for bad behavior by reducing their remaining time on earth. Haimushi, a creature with an appetite for rice, causes problems with the lungs.
Hishaku is found in the spleen, most often in females. Symptoms include an overpowering appetite for sweets, a yellowish complexion, and a tendency to hum. It can be stopped with acupuncture around the navel. Hinoshu, also found in the spleen, looks like a rock and remains dormant inside the body until the host visits a crowded sightseeing area, at which time Hinoshu causes dizziness by thrashing about and creating the sensation of rocks crashing against each other.
Kameshaku eats rice and wears an umbrella-like hat that blocks medicine. It can be destroyed by eating wild beans.
Koshi-no-mushi flies into a host's body and makes its way to the lower back area, where it causes diarrhea, sweating and chest pains. The herbs mokko and kanzo (licorice root) are an effective treatment.