One of Kuroki Tomoko's classmates in her second and third year, Asuka is one of the popular girls in class. She has a keen interest in cosmetics and fashion.
She is friends of both Okada Akane and Nemoto Hina in her own class. Her friends from other classes are Sasaki Fuuka, Narita Miho, and Kusunoki Kaho.
Was called "class mom" by Tomoko, hence her fan nickname. Currently Tomoko's rather obvious crush.