Spica Aoki is a Japanese manga creator known for several serialized works, with the romantic comedy and science fiction series Kaiju Girl Caramelise being the most prominent. Aoki began her career in the early 2010s, initially creating works for magazines aimed at a shōjo, or girls, demographic. Among her earlier credited series are Devil Rock and Beasts of Abigaile, a supernatural shōjo manga inspired by the story of Little Red Riding Hood.

Aoki is best recognized as the sole writer and illustrator of Kaiju Girl Caramelise, which began serialization in the monthly magazine Monthly Comic Alive in February 2018. The series is published in collected volumes by Kadokawa Shoten, with seven volumes released as of the available information, and is licensed for an English-language release in North America by Yen Press. The story follows a high school girl whose intense romantic emotions trigger a strange illness, causing her to physically transform into a giant kaiju monster.

A notable aspect of Aoki’s artistic identity is the way her work transcends traditional demographic categories. Although Kaiju Girl Caramelise was published in a seinen magazine targeted at adult men, Aoki and her editors have consistently framed the series as a shōjo story, focusing on romantic comedy and character relationships rather than action-oriented genre conventions. In author commentaries, Aoki has explained that she initially believed she would need to alter her storytelling approach for a male audience, but her editors advised her to retain the core shōjo sensibility, which became central to the series' identity. This approach blends exaggerated parodic elements of teenage romance with kaiju film tropes, creating a distinct narrative style that embraces the conflicting visual and emotional cues of its premise.

Within the manga industry, Spica Aoki is significant for her ability to bridge different readerships while maintaining a clear authorial voice rooted in shōjo traditions. Her career demonstrates the increasingly fluid nature of manga demographics, where a creator known for girls' comics can find success in a publication aimed at a different audience without abandoning her established artistic identity. Kaiju Girl Caramelise remains her primary ongoing work and the main title through which international audiences have encountered her distinctive fusion of romance and monster fiction.