Our protagonist is a "hobby friend" with an elegant young lady named Hazuki Shizuku. One night, while the pair was making their way home, Shizuku suddenly becomes possessed by a succubus. Though the protagonist struggles to save her, he eventually succumbs to pleasure and is becomes addicted to having sex with her possessed body daily... However, as time passes, Shizuku herself starts to awaken to her own sexuality, and even the succubus is gradually consumed by pleasure...