Once again, it's that time of year—the annual health checkup. Hitomi has had her share of injuries and illnesses throughout her life, always receiving treatment at Dr. Kobato's clinic. Dr. Kobato Tarou, the clinic's director, has been her consistent physician, and his warmth and kindness have always given Hitomi a sense of security. But this year feels different. Hitomi learns for the first time that the examination will include an internal vaginal check, filling her with anxiety and embarrassment. She feels fear at the thought of exposing her naked body to a man, and a new awareness of her own body begins to stir within her. Carrying these emotions, she arrives once more for her scheduled examination.