Saint Martius Academy. It was founded by the powerful 'Nishiki family' of the region to train slaves, and many slave students and slave candidates attend this school. The protagonist, 'Ryuunosuke Kokutou', is requested by the schoolboard chairman 'Yoshio Mori' to work at the school as a teacher. The chairman's request is for him to turn his list of the school's beautiful girls into 'sex slaves'. In a closed space where any methods are permitted, an obscene banquet unfolds. The sweet young girls' impure qualities are exposed and they fall into the hands of the 'slave students'...