19-year-old art college student Ayano Hosokawa makes her AV debut while still living in her youth era. A genuine virgin who has never even kissed anyone, she decided to participate because she wanted to experience sex for the first time. This film captures her precious, once-in-a-lifetime moment of transitioning from girl to woman exactly as it happened. Her tension during this first experience, her expressions when exposing her naked body in front of others, and the emotions she feels during her second sexual encounter are depicted with cinematic realism. Her pure heart and authentic expressions throughout this first-time experience deeply move viewers.