A usually serious and incredibly beautiful sister who never even tells dirty jokes. But she's extremely weak to alcohol, and when she gets drunk, she becomes super perverted! My drunk sister started teasing me for being a virgin and even touched my dick! She then half-forcibly had sex with me, and I unexpectedly lost my virginity! But not satisfied with just once, I chased after my sister, who was staggering drunkenly, and fucked her raw in every corner of the house until her pussy was filled to the brim with my cum.
