my childhood friend aoi, who had moved to tokyo, came to visit my house during her return home. she used to be close with me, but now she looks down on me, saying i'm probably still a virgin. she asked me to be her practice partner for aphrodisiac sex, saying she got the drug from her new boyfriend in tokyo but was too scared to use it herself. once she took the drug, the aphrodisiac kicked in too strongly, and she couldn't stop fucking like a wild animal.