I continued to give my sister-in-law a drop of aphrodisiac every day. As the stinging in her vagina intensified day by day, I couldn't resist immediately joining her, ejaculating inside her until she became a greedy, melting toilet, no matter how many times she orgasmed. DVAJ-685

I unexpectedly obtained an aphrodisiac and decided to test its effects on my live-in stepsister. I secretly gave her a drop each day, and slowly her behavior became increasingly strange. Her body heated up, she sweated profusely while writhing her hips, and even the slightest touch would elicit sweet breaths. After about a week, she had completely transformed into a wanton stepsister. When she could no longer resist masturbating, I barged in. When I displayed my erect penis, she lost all reason and began sucking. Kneading her large breasts and inserting my soaking wet penis, she showed an expression of orgasm, experiencing multiple orgasms. It wasn't over yet; I continued until I had turned my lustful stepsister into a sex slave…