C110 Am I Still a Virgin or Not

Then, my sister immediately bit on my shoulder in pain and started crying.

I started to move, but my sister held on to my hips and wouldn't let me move, because it was painful to move my sister, but after what I had done with Xu Yajie, I was now aware of what I was doing, but I couldn't help it, but I was still okay. He also knew how to be gentle and considerate towards his sister