Jun Kasui, my student who is usually quiet and loves reading. One day, she suddenly started wearing a mini-skirt, and in every situation, such as during class, after school, and during counseling, she shows me her panties so that only I can see them. Could it be that she's trying to seduce me...? And after school, in a classroom with only Jun and me, she said, "I want to have sex with you, teacher..." The languidly beautiful Jun Kasui makes her first challenge in a seduction situation!