Nanako Midorikawa is a supporting character in the story. She is a classmate of Kaoru Yamazaki and is studying to become a voice actor. Her appearance is the basis for the female protagonist in the adult game that Yamazaki works on, as he has a romantic interest in her. Nanako is initially perceived as a quiet and somewhat reserved young woman, but her character reveals more complexity as the story progresses, particularly in the manga version.

Her motivations are primarily focused on her voice acting aspirations. She also displays a strong desire for social acceptance and self-preservation, often prioritizing how others perceive her. In the manga, when Yamazaki prepares to return to his family’s farm, Nanako confesses that she never actually had romantic feelings for him. She admits to having stalked other girls since high school and explains that she pursues voice acting roles for male characters because she wants to be a hero to cute girls. She also reveals that she chose her hairstyle specifically to appeal to other girls and that she dated Yamazaki only to avoid negative rumors. This confession highlights her deep-seated insecurities and a more manipulative, self-serving side.

Her role in the story is relatively small compared to the main trio of Satou, Misaki, and Yamazaki. She acts as a catalyst for Yamazaki’s personal growth and disillusionment. Through his interactions with her, Yamazaki is forced to confront his idealized view of romantic relationships and the gap between fantasy and reality. Nanako’s development is most pronounced in the manga, where her true nature is fully exposed, while the anime downplays her more controversial traits. She has no notable supernatural abilities; her key skill is her voice acting talent, which she uses both professionally and as a tool to shape her identity.