ROYD-092 — My Sister, Who Is A Super Slut, Is Made To Cum So Much That She Convulses! My Friend Is A Sex Monster... Nanami Kawakami

My sister is a super slut who will have sex with anyone, and even though she has sex with nearly 10 people a day, her sexual desire is still not satisfied, and she is a mass of sexual desire that says, "I want to have even more crazy sex." I can't help but feel that if this continues, things will go in a dangerous direction. I was wondering if there was someone with an incredible sexual appetite who could satisfy my sister's sexual desire, and I found one. There is a sex monster at my school who is said to be one step away from being a sex offender because his sexual desire is so strong...