Truth is stranger than fiction: Kyoka says her only sexual partner has been her half-brother, who has kept her in an incestuous training relationship in Toyama. Now working as a dental assistant and living with him in Tokyo, she claims their forbidden affair is still going strong. Her first outdoor shoot puts that claim to the test, awakening her masochistic side until she begs to be humiliated even harder. She is then secretly given a raw creampie without her brother knowing, followed by the boast that she may be a dental-assistant mom by next year.