Minami Takahashi is a beautiful schoolgirl warrior who fights as Sailor Trinitia, guardian of peace, empowered by the mystical treasure "Master Force" passed down from the ancient civilization of Lemuria. By day, she lives an ordinary life as a student at Hinatazaka Academy. One day, however, the dark entity known as the Training Demon Aisa begins spreading a sinister business that manipulates the negative energy of super heroines and human desires. Disguised as an ordinary person, Aisa offers an abnormal service: the training and domination of superheroines. In truth, Aisa leads a shadowy organization seeking "female dogs" to fulfill clients' darkest desires. Falling into this trap, Minami is subjected to a grueling week-long training regimen... [BAD END]