Deformed Gecko(化けヤモリ)

The story is centered on a family living in a small village that consist of a man named Hikobei, his wife, and three daughters where a Gecko witnesses the three daughter acting so selfish and always fighting over trivial things causing it to become upset and start to blacken until the youngest daughter accidentally kills when she was pushed and fell on it. One night the dead gecko slips into the water supply where the youngest daughter unsuspectingly swallows and slowly transform into a Gecko, but that is only the beginning as each night one family member would be turned into and become a gecko.