My colleague's mother

It's a midsummer day with a blistering heat. After losing my place to live in the fire, I was forced to stay at the parents' house of a colleague I've been close to since I was a child for several days. I have a relationship with my colleague's mother, Shizuka, who lends and borrows historical novels, and is a neat and beautiful woman I admire. One day, a random incident reveals that Shizuka is frustrated. Since then, I have begun to secretly violate Shizuka, who is resisting, and while my colleagues are looking, I have started to secretly violate Shizuka, and before long, Shizuka has started to ask for my dick...