My plain, overlooked stepsister transformed into a stunning beauty thanks to my advice! As she gradually learned makeup and became more beautiful, I couldn't help but confess my feelings. However, she refused, saying it was wrong because we were siblings. We made a pact to just rub each other's genitals, but her pussy was so wet that I couldn't resist inserting my cock! Even though she tried to say no, our youthful lust had already crossed the line, and we ended up having intense sex and creampie. What happened to them after that...?