I, a virgin, failed at sex with my girlfriend and became afraid of having sex again, leading to school refusal. Then, a goddess appeared who said she would have sex with me! Although she is my sister... if this means I can graduate from being a virgin, then even my sister will do. However, before I knew it, I had done it three times in a row without pulling out inside her! Even after making such a mistake, my sister forgave me with a kind smile, so I ended up doing it inside her over and over again! My sex might be clumsy, but even my sister can't help but cum over and over with this much stimulation!
