Since their mother passed away, the Minazuki family has been a single parent household. The father works hard for his only daughter, and Hikaru grows up diligently watching her father, but before she knows it, Hikaru has feelings for her father who works so hard for her. She masturbates every day to console herself, trying to suppress those feelings. But one night, when her father brings up the topic of remarriage, Hikaru, who is usually quiet, finally lets out the pent-up desires that have been building up inside her!