A kime-lesbian crazy woman who can't forget the pleasure of being fucked by her boyfriend's sister in a kotatsu with an aphrodisiac handjob and begs for an aphrodisiac to chase her away.

In "Fallen into Lesbianism When My First Girlfriend's Sister Gave Me an Aphrodisiac," a girl is NTR'd by her boyfriend's sister in a kotatsu, and she surrenders herself to the aphrodisiac and drowns herself in the pleasures of lesbianism. The setting, in which she blames herself for parts she cannot see, is attractive, and the conversation and reactions are natural, but the excessive use of the aphrodisiac is a bit disappointing. However, the scene after she falls is most exciting.