Asahina is a new transfer student. She loves physical education so she often goes to swimming practice at the school swimming pool. Her teacher is a pervert who loves swimsuits. He secretly installed cameras to secretly film students. And when he saw Asahina's body in a swimsuit, he was attracted to her. Under the pretext of helping her learn to swim, he continuously used his dirty hands to touch Asahina's body. Asahina also accidentally discovered his camera, but she didn't think he was the culprit so she 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, he made her unconscious and used his phone to take pictures, threatening her and forcing her to listen to him. And from then on, Asahina was forced to listen to the perverted teacher's words, accept his request and let him fuck her anytime he wanted...
