Sex ga Suki de Suki de Daisuki na Classmate 4

The protagonist is in love with Natsuki, a fellow student. However, seeing her as an outstanding student while he struggles academically, he feels unworthy and views her as an unattainable girl. Additionally, he harbors a secret: he masturbates thinking about Natsuki, regardless of his location, even at school. One day, while engaged in this act thinking of her, he hears a noise. Turning to see where it’s coming from, he catches Natsuki doing the same. Captivated by the sight, Natsuki notices him watching her. On the verge of tears from embarrassment, he confesses to her that he also masturbates at school, thinking of her.