I'm frustrated with my girlfriend who doesn't like sex. When I went to a sex shop to relieve my sexual desire, I unexpectedly encountered her sister! Although it was an awkward atmosphere, we became friends and shared secrets, and we both got excited! I was Kokoro to her sister who had big breasts and even let me cum inside her. I went to meet her without telling my girlfriend, and the most erotic days began! And at the end... I had creampie sex right in front of her!