The older sister gets heated by an aphrodisiac and squeezes out her brother's semen all day long

A virgin Takashi hears from a friend that women have sex and masturbate, and out of curiosity she gives her sister Minoru a large amount of aphrodisiac. Initially, she succeeds in seeing Minoru masturbation in heat as planned, but Minoru, who has lost her own medicine, is found by her cock and is grabbed and her virginity is taken away. After that, she went out at her parents' house with nowhere to escape until the medicine ran out, and Minoru, who had become an extremely slut, attacked many times and squeezed out all the semen...