The season when flowers sprout. Hina, who had returned to her father's parents' house, was witnessed by her uncle one day indulging in masturbation, which led to her establishing a lewd relationship with her uncle. Hina, who didn't know the sex slave at all, was puzzled by her uncle's caress, but couldn't resist the pleasures and transformed like a sex slave as she was told. Eventually, Hina's stomach is full of sexuality with her uncles without going to school ... [* The image and sound may be distorted, but please note that this is not a defect of the product itself.]