She became pregnant by her first boyfriend in college and chose to raise her beloved daughter Kaori alone despite everyone’s objections. Wanting Kaori to have a happier life, she feels relieved when her grown daughter introduces Shinji, a polite and serious adult boyfriend. But behind Kaori’s back, he forces her mother down and takes her. Torn between being a mother and being a woman, she hates how intensely her body responds—and cannot stop sleeping with him afterward.