The arrogant stepsister, drugged with aphrodisiacs, was repeatedly deep-throated until her eyes rolled back, she lost consciousness, convulsed, and lost control of her bladder. (Mochizuki Rei GVH-828)

Xiao Lei, a cheerful stepsister, and Cong, a gloomy, introverted stepbrother, become siblings due to their parents' remarriage. Xiao Lei utterly despises her stepbrother, who's like a complete couch potato, and constantly finds fault with him. On her birthday, Cong receives a suspicious aphrodisiac from a friend. To get revenge, he poisons Xiao Lei. As a result, she loses all control, her entire body becoming an erogenous zone, constantly squirting and incontinent... Although she stubbornly resists, her body can't withstand the pleasure, and she's brought to a state of ecstasy, moaning and climaxing repeatedly...!