One day, 'Akari,' who was discarded on the street, is picked up by a perverted old man and kept as a pet. She is made to wear cat ears, a collar, a duck mouth gag, an anal tail, and more. Under the guise of training, she undergoes object insertion, enemas, anal sex, and other perverse acts. 'Akari,' who had never had any anal experience before, finds her anus inexplicably wide open.
