Rin, who is obsessed with her brother and loves him more than anything, was itching to have sex with him. However, her sensible older brother never saw her as a sexual object. "I know! I'll use an aphrodisiac!" thought Rin, deciding to carry out the reckless act of soaking her brother in aphrodisiacs! The brother, driven mad by the aphrodisiac and unable to stop his erection, has intense sex with his sister who loves him dearly.
