A virtual YouTuber in Nijisanji.
Character design by Paryi, personal emoji is 📕 (closed book).
Nicknamed "Manmaru" by Yuzuki Roa and "Marumaru" by pretty much everyone else, as well as "Master" by Ex Albio, she is presented in-lore as a magician.
Notably short (147cm) with a sizable bust, she is portrayed with short white hair and blue eyes.
Her default outfit consists of a black hood, white shirt, black skirt, black see-through detached sleeves, and black knee boots.