An incestuous sex movie by Rikka Ono, Rikka’s mother is about to remarry, her new father is a very kind and mature person. Seeing her mother so happy also makes Rikka feel happy for her mother. But when witnessing her stepfather’s skillful hip shaking ability, the lust inside Rikka rises again. Although she feels very guilty towards her mother, she cannot stop herself. Using the excuse of being bitten by a mosquito, she asks her stepfather to apply medicine for her, and the bite is right in the middle of her buttocks, she has to pull down her underwear to see. Even so, her stepfather still stays awake and quickly leaves. It can be endured once, but what about twice? Rikka often wears short skirts to reveal her plump buttocks with her pretty little T-back panties. She deliberately spills tea to crawl under the table, deliberately letting her stepfather take a closer look at her provocative shaking buttocks. And Rikka wins! That night, unable to bear it any longer, her stepfather crept into Rikka’s room. Of course, Rikka was also waiting for her stepfather. Even though she knew it was wrong, Rikka’s sexual desire overcame her feelings of guilt towards her mother.