Shiori, with her delicate features and slender legs, makes her debut as a cross-dresser through female character cosplay. Though she holds a clear desire, the chance to fulfill it has never come—until now. Determined to lose her anal virginity, Shiori resolves to appear in an adult video. While masturbation provides sufficient anal stimulation, taking a real penis proves unexpectedly difficult. Full of anxiety and impatience, she attempts repeatedly, intensely curious about the outcome. Will she succeed, or face a different ending?