Her quiet and gentle sister, Yuhi-chan, turned out to be a total sex fiend! I never expected her to be so erotic... It all started when I was tutoring her, sneaking in some body touches while she wasn't looking. Suddenly, she started devouring my cock, and I realized her girlfriend was right there! Despite the guilt, I couldn't help but cum from the pleasure. Later, while her girlfriend slept, I teased her feet, licked her ears and clit, and even gave her a taste of her own forbidden pleasure with my tongue on her untouched anus... I felt so bad, but the thrill was too intense, erasing all guilt. Even after multiple orgasms, her insatiable lust, like a succubus, kept driving me to insert my cock again and again! With copious amounts of precum, I made loud, obscene noises as I pounded away in doggy style, creampieing her while she slept. I thought she was just a sweet and innocent girl, but she turned out to be a psycho sex killer who loves the thrill and pleasure hidden beneath a sheep's clothing! Before I knew it, I was completely captivated by Yuhi-chan.