The teacher always wears a short skirt, pretending to be serious and not understanding, but the hem of her tight mini skirt is rolled up. I wonder if she's showing it on purpose? But... if she shows me her panties in front of me like that, I can't concentrate on studying anymore... She starts showing me her panties in a defenseless way, and gradually becomes bolder... and in the end, she makes me cum erotically and gently!