She glimpsed the dark side of the school… Her crush, the class president, is a submissive girl being bound and disciplined by the teacher. Nagisa Mitsuki MUDR-237

[Peeping into the class monitor's secret face...] The class's cutest monitor is actually a perverted hot girl, and I learned about her fetishes... The way she was bound and begging for training was too unpleasant... She was completely different from the ideal image, and I couldn't suppress my jealousy and excitement towards her... Bound training, exhibitionist games, and the bondage hot girl who is obsessed with the differences between girls... perverted training.