Finally, he managed to penetrate my sister through her small virgin anus

My sister and I have had a lot of time having sex to practice. Since when we were kids, our parents used to have sex on the side of our bed. This led us to want to practice, and to this day we continue to fuck because we don’t have partners to do it with. The problem is that I have always wanted to penetrated her ass to find out what it feels like. But she doesn’t agree to let me penetrate her there because she wants to give it to her husband. After many pleas, my sister’s bitch agreed to let me penetrate her ass and I decided to record it all to remember it forever. She starts on the bed opening up her own ass. Since the dick is dilated, it can enter easier and without hurting. She tells me when she’s ready and when it’s time, I insert my dick into her ass and without a condom to not break the spell. It’s exciting to hear her moan when she has her own brother’s dick in her ass.