Mafuyu Asahina is a 17-year old, living in Tokyo, Japan. She is a second year at Miyamasuzaka Girls' Academy, in class 2-B. Mafuyu earns good grades and is the representative of her class. She is said to excel in both academics and sports; hence, people often set high standards for her to excel in everything, which she does without fail. However, in reality she is heavily burdened and pressured by the expectations placed on her. She is also the lyricist for "Nightcord at 25:00".