Bijin Kyoushi wa Shuuchi no Toriko

"Make me more and more undignified!" The heroine, Sumire Misaki, born into a family of educators recently became a teacher. As a woman she was very diligent and commanded respect. She managed her classes without a hint of emotion. The students began to call her the Iron Mask. One night, Sumire saw a woman naked in the street. The woman was her total opposite. Uninhibited and sexually free. Sumire's eyes were opened. The forbiddenness. The humiliation. Her body yearned for such a thrill. Sumire became aroused. She timidly exposed her skin, and was instantly in love with the fetish. Once she had a taste, her obsession grew. Sumire was quickly unable to be satisfied by just a little flash of brassiere. "I know it's wrong, I'm supposed to be a role model. But I can't control myself." How far will the new teacher go?