Hikari is a newly transferred student. She loves to learn physical education, so she often comes to practice swimming at the school's swimming pool. Her teacher is a pervert who loves swimsuits, he secretly installs a camera to secretly record students. And when he saw Hikari's body in a swimsuit, he was attracted to her. Using the excuse of helping her learn to swim, he repeatedly used his dirty hands to touch Hikari's body. Hikari also accidentally discovered his camera, but she didn't think he was the culprit and handed it over to him. It was only when his actions became more and more outrageous that she learned the true nature of this person. But it was too late, and he knocked her unconscious and took pictures with his phone, threatening and forcing her to obey him. And from there, Hikari is forced to listen to the pervert, accept his request and let him fuck her whenever he wants...