Attackers exclusive performer Kano Kashii makes her first appearance after a major transfer. Returning home for the first time in more than a decade, Kano visits her childhood friend Mio—and walks into a nightmare. Mio’s father, Ippei, lusts after the now-grown Kano, sneaks into the room where the two women are sleeping, and assaults her. One night is not enough for him, so he doses Kano with a suspicious aphrodisiac and gradually turns her into his sex slave.