The Tenma family became a single-parent household after the mother passed away. The father worked tirelessly for his only daughter, and Yui grew up honestly watching her father's back, but Yui secretly harbored feelings for her father that went beyond parent and child. She would suppress these feelings every day by masturbating to comfort herself, but one night, after her father brought up the topic of remarriage, Yui's pent-up desires finally exploded！！
