NHDTB-814 Stealing with my lover's sister

This is my first time going to my girlfriend's house. Her parents returned home and her sister went on a business trip, so it was just the two of us left at home. My girlfriend always forces me to wear a condom, even though I don't like it, but because she wants it, I have to obey her. Just as she was about to join in, her sister suddenly burst into the room wearing only her underwear. Because her sister was here, we had to stop. My girlfriend went to buy something to cook and I went to take a shower. She immediately went into the bathroom with me and wanted to shower me to apologize for what had just happened. There was no other way so I had to agree. She bathed me with her body, using her big tits to clean my cock. She continuously seduced me. Even though I loved Ran very much, I couldn't resist her big breasts and especially she didn't force me to wear a condom and cum directly inside her!!!