After the death of his mother, the Emoto family became a father-son family with only one parent and one child. The father worked tirelessly for his daughter, and his daughter Ayami grew up seriously and quickly by watching her father's back, but Ayami secretly had feelings for her father that were more than parent and child. - She comforted herself by masturbating every day as if to suppress such feelings, but one night when her father cut out the story of remarriage, Ayami's lust that had accumulated in the pool finally exploded!