Susy Hanazono is an energetic 11-year-old tomboy with auburn braids tied by a signature yellow bow. She adores flowers, inspired by her family's flower shop, and dreams of becoming a manga artist, showcasing strong artistic talent despite struggling academically. Her spirited nature sometimes leads to impulsive decisions, especially in choosing unusual subjects for her art. While preferring sports and outdoor activities attracts criticism for being unfeminine, she often wears pink skirts. Her life transforms at the Flower Festival when protecting a dandelion attracts flower fairies Kakimaru and Keshimaru. They grant her a magic wand and pendant.

Using these tools and chanting "Pastel Poppuru Poppin-pa!", Susy materializes her drawings in the air. These creations—from everyday objects to living beings or clones—last only briefly, disintegrating into flower petals when her pendant flashes. This power demands inventive problem-solving under strict time constraints, hindered by rules like the inability to recreate the same object twice and occasional inconsistencies in duration or activation. At her family's flower shop, she harbors a crush on older coworker Kyōhei Misawa, oblivious to the affections of his younger brother Kenta, her classmate and closest friend. Her home life involves frequent parental arguments, a mother struggling with alcoholism, and an adventurous grandfather disappointed by his son's conventional career. Her initially contentious relationship with the wealthy Mrs. Fukurokoji evolves into mutual respect.

Discovering disruptions in Flower Town linked to the decaying Flower World, Susy travels there with companions. She confronts environmental decay and giant insects, seeking "silver drops" to awaken the comatose fairy queen. Demonstrating resourcefulness, she uses her powers to create transportation like gliders and wings, ultimately restoring the realm before a bittersweet farewell to Kakimaru and Keshimaru. In the OVA "Majokko Club Yoningumi A-kūkan kara no Alien X," she joins other Studio Pierrot magical heroines to defend Earth against aliens on the moon. Throughout, Susy consistently shows kindness toward nature, resilience amid family challenges, and growth through responsibility, navigating the complexities of her magical abilities.