YSN-360 My Older Sister, A Studious Woman With No Interest In Sex, Gets A Dose Of A Rumored Medicine And Turns Into A Lustful Mess Who Won't Let Go Of My Cock - Mikoto Moch

My older sister, an elite student who usually hates men and spends all her time studying, reacts unexpectedly when I slip her a mail-order aphrodisiac. She changes into a lewd woman, bites onto my cock, straddles my face, and pushes her pussy at me, and I take advantage of her while she is out of her senses. Six episodes total, with my sister and me having a strained relationship.