Chisa Hoshino is a sprinter on a corporate team, known for her sleek physique and firm, extra large breasts. Once seen as a rising star, she was forced to take a break due to injury. During intense training to regain her spot, she's taken advantage of by the head coach, leading to a sexual relationship. Unseen by her, her junior "I" secretly records the act and uses the images to blackmail her into a humiliating training regimen. Told through a complete POV perspective, she repeatedly climaxes uncontrollably, screaming in pleasure. A powerful blend of sensual imagery and dramatic storytelling.