Otome Sakuragi, Kazuki Okino's childhood friend, has known him since their earliest years. One year his senior, she assumes a nurturing role, frequently tending to Kazuki and managing household duties for his family. Outwardly composed as a well-mannered high school student, she harbors inner vulnerability, making her susceptible to manipulation through her trusting nature. Physically, Otome has waist-length pink hair, blue eyes, and a developed figure with large breasts and pronounced curves. She typically wears school uniforms, skirts, thigh-high stockings, ribbons, and athletic wear. Her appearance and demeanor attract admiration from male classmates, yet she shares a mutual romantic interest with Kazuki. Neither has confessed their feelings, but both anticipate a future partnership. Her story shifts when Kazuki witnesses her departing with an older man and later receives DVDs depicting her explicit acts with multiple older men. The videos show her initial reluctance—including distress over losing her virginity to someone other than Kazuki—followed by gradual compliance and stated enjoyment. This inflicts severe psychological distress on Kazuki, fracturing their relationship. Later revelations indicate Otome's involvement stemmed from a promised exchange, though its nature remains undisclosed. Her interactions with Kazuki grow distant, culminating in her expressed indifference. The narrative concludes ambiguously: Kazuki awakens as a middle-aged man married to Otome, raising a daughter together, only to discover one of the DVDs from his apparent nightmare, casting doubt on his current reality.