HUNTB-563 "It's a dangerous day today. Do you still want to have sex? You don't have the guts for that, right?" My older sister tries to brush it off with adult composure, but I, a virgin, have max danger level, high implantation rate sex!

I've been a virgin for too long, and although I'm kind, my stepsister treats me like a child. I begged her, 'I want to have sex,' but she tried to brush it off casually with adult composure, saying with a smirk, 'It's a dangerous day. We can't, right?' But no! No! I really want to do it! When I forcefully attack her, she genuinely panics but also enjoys the thrill of possibly getting pregnant, becoming even more excited than usual. However, after I barely manage to pull out, my sister looks at me with unsatisfied eyes...!