That JAV

A man who is so extremely shy that he doesn't want to take off his mask in public locks up Ruru-chan, a JK student. He locks her up in his house with a magic mirror and watches her. Here, she is safe and secure, and he knows that nothing will be seen by her. Ruru-chan knows that nothing will be done to her, but she is only allowed to communicate with him one-sidedly, and she becomes more and more terrified. She is so afraid that she can only do what the man tells her to do, and she is gradually trained by him.