Yuu is Mikoto Mikoshiba's best friend in the drama club and is in class 2-G. Yuu is quite tall and has a "prince" personality that makes the girls fawn over her. Mikoto and Yuu considered each other rivals in their first year, although Yuu was clearly better in all aspects, but eventually became very good friends.
Due to her tendency to ditch, Yuu is often dragged by Hori to their club activities.