KBI-099 Leaving my wife home alone with my brother and the outcome

My family didn't let me know my girlfriend because I was still in school, I angrily ran away from home and went to my brother's house to ask for a few weeks. Perhaps he knew about the matter, so he insisted on not letting me stay and taking me home immediately, because it was already dark, so I was allowed to stay for a day and had to leave the next morning. But my sister-in-law secretly let me stay for the next few days, she let me stay in her closet and promised not to tell my brother.
During this time, I got closer to her and began to pay attention to her body. Although I am over 30, my sister-in-law is still young and "delicious", with a standard physique, smooth white skin and a huge toned bust that makes my cock erect every time I am near her.
I began to crave to fuck her once, to have my brother's beautiful wife's pussy thrust...