Asuka grew up in a strange household. Her entire family casually engaged in sexual relationships, treating it as a normal part of daily life. Still a high school student, her body and mind were maturing into adulthood. Amid this environment, she began to develop doubts about her family's way of life. Every morning, she was forced to give blowjobs to her father, mother, and brother one after another, and in the evenings, she had sex with her father in the bath. Living this life, one night Asuka made a firm decision to take action according to her own will.