HUNTB-563 — "Today's Your Dangerous Day. Do You Still Want To Have Sex? You Don't Have The Courage, Do You?" My Step-Sister Tries To Dodge The Calls With Adult Composure, But I, A Virgin, End Up Having Sex With Her In A Highly Dangerous Situation With A High Chance Of Implantation!

I'm a virgin who's been stuck in this state for too long, so I beg my step-sister, who is kind but treats me like a c**, to "let me have sex with you!" But my sister tries to brush me off with the composure of an adult, grinning and saying, "It's a dangerous day. You can't do it." But! But! I really want to do it! When I forcefully attack her, she gets really flustered, but she gets more excited than usual, enjoying the thrill of maybe doing it. But when I come out at the last minute, my sister gives me an unsatisfied look...!