YSN-382 I tried some aphrodisiac oil on my usually cold and distant stepsister out of curiosity, and suddenly! She made a lewd face, licked my nipples, and with a sweet voice said, "Please, let me suck it," until I was completely drained.

I bought the rumored "oil that makes you horny when you apply it" on the street, and tried it on her and thought I'd try it, but when I tried it on my sister-in-law to see if it really worked, it seemed to work better than I expected. It suddenly changes to be surprisingly lascivious. She straddles my face and sucks my cheeks to the point where it's drool-covered. A total of 6 episodes of naughty pranks on 6 sisters-in-law.