This episode tells about Shiranui, the mother of Mizuki Yukikaze, who went on a mission and disappeared, since then nothing has been known about her for five years. Time passed, and her daughter Yukikaze, along with Rinko and her brother, came to a clue of the possible whereabouts of Shiranui. In the new episode, we will see how she was grabbed, raped and sexually trained to become a top-notch whore.