Poemi is 10 years old and hyperactive beyond comparison. Described as "wastefully energetic", she's an eager student, she's got a crush on K, the popular boy in her class, and she wants to become a voice actress. She normally breaks the fourth wall by referring to herself as "Kobayashi", which is the last name of her own voice actress, Yumiko Kobayashi. Poemy also breaks the fourth wall by referring to Nabeshin as "the Director", since Nabeshin is voiced by Shinichi Watanabe himself, the director of the series. After her adoptive parents, Nabeshin and Kumi-Kumi, are killed by Alien #1, Poemy moves in with her best friend, Futaba Aasu. Then, when an alien mecha attacks the city, Poemy encounters a mysterious and silent man playing the shamisen, who is apparently her real father, and he gives her a fish, which when gutted and used as a magic wand, allows her to transform into Puni Puni Poemy, a magical girl embodying the will of Earth itself.