My 20-year-old sister's first time drinking resulted in a lewd awakening! An introverted and earnest sister transforms into such a wanton woman after getting drunk… HUNTB-380

My 20-year-old sister asked me to drink with her for the first time. My sister, who's capable of anything, enthusiastically taught me how to drink… wait? She seemed strange? My usually shy sister, when drunk, had a lewd expression and was obsessed with wanting a penis. Just when I sensed something was wrong, it turned out she was genuinely experiencing a lewd awakening! Suddenly, she was forced into penetration, even subjected to forbidden ejaculation. What was supposed to be teaching her adult drinking etiquette turned into adult penetration techniques…