MGBJ-016 Rin: Sister-in-Law's Secret AV Past Discovered by Brother-in-Law

After moving into a new apartment, the narrator visits with sake and finds his sister-in-law Rin, a glasses-wearing beauty, alone with him when his brother steps out. He shows her a video of her past AV performance, and she begs him not to tell. He threatens her into performing acts on the sofa, and she complies timidly.