A documentary-style adult film featuring 19-year-old female college student Natsumi experiencing her first time. A pure-hearted girl who has never even held hands with a man before gradually opens herself up through her first kiss and first physical contact. Her inner emotions—fear of the unknown intertwined with overwhelming curiosity—are vividly portrayed as she slowly transforms. Witness her heartfelt journey from innocence to adulthood, a deeply moving transformation.