Daiyousei  

, 大妖精（だいようせい）

Daiyousei is a greater fairy who resides near the lake surrounding the Scarlet Devil Mansion. She possesses traits of being cheerful, mischievous, simple-minded, and emotional. In Embodiment of Scarlet Devil, she attacked the heroine while flying above the lake around the mansion. Despite her presence in the story, little is known about her motivations or significance to the plot.