22-year-old office lady Hiroko comes to Tokyo from Okayama via express bus. She has no prior dating or sexual experience—appearing as a perfect virgin. She suddenly applied for virginity loss, specifying the date and time herself. Her photos already show her to be a beautiful girl, but in person, her cuteness is even more striking. When touched or exposed, her face turns bright red, displaying reactions typical of a true virgin. Enduring the pain, she successfully completes penetration and experiences the pleasure of first-time sex. Filled with overwhelming sensation due to it being her first time, she radiates pure enjoyment.