Ami Nonomura stands central across multiple installments of her media franchise. Initially a high school student with brown hair, green eyes, and a sensitive, sweet disposition, she lives with her older non-blood-related brother, Hiroshi. During their mother's absence, their relationship develops into a sexual affair, ultimately discovered. Hiroshi faces exile to study abroad as a consequence. This separation leaves Ami deeply attached, enduring prolonged heartache and persistent fantasies about him. Her emotional vulnerability leads her to a nightclub with friends, where a drunken encounter results in a one-night stand with known playboy Ryuji Kouno. Kouno becomes fixated on her, initiating further non-consensual encounters explicitly aimed at replacing Hiroshi in her affections. Struggling with this turmoil, Ami confides in two close friends about her relationship with Hiroshi, finding unexpected understanding and support. Her life shifts when a photograph taken without her initial consent leads to being scouted as a model and idol singer. This opportunity is marred by an attempted assault by the photographer, from which she escapes after resisting him. Kouno intervenes during the incident, revealing his ongoing surveillance, and facilitates her rescue. Years later, depicted in "Ami, From Then On," she has matured into adulthood and achieved sustained popularity as an idol singer. This period shows significant evolution in her personal relationships, including a resolution of the longstanding conflict between Hiroshi and Kouno. Her journey traces a path from adolescent trauma through exploitation toward eventual professional stability and personal change.