Every day, I added a drop of aphrodisiac to my stepsister's drink. As time went on, she began to unconsciously sway her hips. I couldn't resist any longer and immediately had sex with her. No matter how many times she orgasmed, I would continue to ejaculate inside her until she became a sticky, craving fleshy receptacle. (Kujiro Tamao 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 and writhed, 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 expressions of orgasm, experiencing multiple orgasms. It wasn't over yet; I continued until I had turned my lustful stepsister into a sex slave…