JUQ-933 Only I, the class representative, know the hidden side of the student guidance teacher, Ms. Sayuri Hayama. After school, she spends her time between being the most serious female teacher in the school and indoor exposure.

Today, after school, I heard the voice of a teacher scolding students in the hallway. This voice belonged to Sayuri-sensei, who was responsible for student guidance. She was one of the most serious and strict teachers at our school, but as a diligent class committee member focused solely on studying, I secretly harbored good feelings towards her attitude. One day, while climbing the stairs for a mobile classroom, I heard Sayuri-sensei's voice from upstairs. As I looked up to greet her, I found that she wasn't wearing any panties. Such a serious teacher...I was stunned and gradually became aroused.