Her teacher is a pervert who loves swimsuits. He secretly installed a camera to secretly film students. And when he saw her body in a swimsuit, he was attracted to her. Using the excuse of helping her learn to swim, he continuously used his dirty hands to touch her body.
Sumire Kuramoto also accidentally discovered his camera, but she didn't think he was the culprit and handed it over to him. Only when his actions became more and more outrageous did she learn the true nature of this person.
But it was too late. He knocked her unconscious and used his phone to take pictures, threatening and forcing her to obey him. And from then on, Sumire Kuramoto was forced to obey the perverted teacher, accept his requests and let him fuck her whenever he wanted.
