PTAV-021 - My classmate who teases me with her panties, knowing I'm watching

I accidentally caught a glimpse of my classmate's panties, and now the thrill is happening right before my eyes in the classroom! I want to keep staring, but if I get caught, it's over... My eyes are out of control. I finally got caught, but her reaction is weird? She's smiling at me? Could she be enjoying this too?