Natsume Kisaragi is a teacher at the school where the story takes place, described as young and attractive. He possesses extensive knowledge of the magical world of Figurare and the Stellar Spinners, and he has the ability to use and even create magical potions. In the narrative, he serves as the primary source of guidance for the protagonist Masaharu Tsuwabuki, informing him that he has been transformed into a stuffed lamb and explaining that the only way to revert to human form is to collect seven stardrops with the help of a chosen girl. Natsume also forces Masaharu to join the Gardening Club, which becomes a central setting for the story. He is calm, knowledgeable, and often acts as an adviser and exposition provider to Masaharu and Sumomo Akihime as they embark on their quest. His relationship with Sumomo is notably close; she feels completely at ease around him, unlike her usual shy demeanor with others. This closeness leads many classmates, including Masaharu, to initially believe that Natsume is the object of Sumomo’s affection. The truth behind their bond is that Natsume is actually the younger brother of Sumomo’s mother, making him her uncle. This familial connection explains their easy rapport and his protective, guiding role in her life. Natsume’s motivations stem from his duty as a teacher and his personal care for Sumomo, and he remains a steady, knowledgeable presence throughout the story, using his magical expertise to assist the main characters.