It's the season when flowers sprout. One day, Hina, who was visiting her father's hometown, is caught masturbating by her uncles, and this leads to an indecent relationship with them. Hina, who doesn't know the basics of sex, is confused by her uncles' persistent caresses, but she can't resist the pleasure and becomes their sex slave. Before long, Hina, who doesn't go to school and Hina sex with her uncles, is full of energy...