Naoto is a new teacher who has been put in charge of a problematic class dominated by bullies. Due to her strong sense of justice, she tries to protect a student who is being teased, but it turns out to be a trap. Naoto is covered in liquid in the gym storeroom, tied up with her legs spread wide, and tortured with a vibrator. She desperately tries to keep her sanity, but once the effects of the liquid take effect, she can no longer resist the pleasure... Click here for the special page for the collaboration campaign between "Kousei Sangokushi," in which Nanao Saigetsu appears as a game character, and "FANZA Mail Order"! If you purchase a work featuring Nanao Saigetsu during the game campaign period, you will have a super big chance to win a "Cheki" or "Autographed Colored Paper" in a lottery!