After school, track and field ace Mizuno Toru runs alone on the empty field. She has short hair and a healthy tanned skin. Contrary to her impression, she is usually quiet and expressionless. However, there is something passionate about her as she runs through the schoolyard. The protagonist happens to see her and falls in love at first sight. Without ever meeting her, he spends his days secretly watching over her. One day, Toru notices his gaze and their eyes meet and the protagonist is dragged into the gym storage room. Before he knows it, Toru is straddling him, unilaterally taking his virginity. "It's your fault..." Toru has noticed the protagonist's gaze for some time. With each passing day, her body grows hotter as he gazes at her as if licking her and her pent-up desire finally explodes. The suddenness of what has happened makes him wonder if he's dreaming but Toru pushed her hips back and quietly demands more. Toru's instincts are exposed and in a state that is hard to imagine given her usual appearance. Lost in sex with the girl he'd admired, he thrust wildly, climaxing inside her again and again. However, no matter how much he ejaculates, Toru's desire does not subside,and every time his cock goes limp, he is forced to get an erection...