Forced orgasms to ensnare my girlfriend's younger sister (unsophisticated, socially awkward, and uninterested in sex), turning her into a sex toy. (Tsukino Emi WAAA-472)

[The most insane forced orgasms and orgasm levels in history] I met a landmine-like younger sister named "Cui" at my girlfriend's house. She rarely speaks, is awkward around strangers, and has absolutely no interest in sex. I'm going to use aphrodisiacs to turn her into a sex toy! Her slender body is driven to the brink of collapse with repeated orgasms, turning her into a lewd, lustful beast! Intense thrusting and ejaculation with aphrodisiacs, begging for a penis during sex, begging a delivery driver for penetration and ejaculation, and even having naked NTR sex with aphrodisiacs in front of my girlfriend! Even the most intense methods make her happy, turning her into a super-M ejaculation sex toy!