She is one of the main heroines of the story. She is exceedingly popular, kind and pretty. Koushirou Mizumoto is her childhood friend. She is also a friend of Kaga, Ritsu and Mari.

Spoiler

She was forced to switch bodies with Zenko Umine.

Spoiler

Later in the story, it's revealed that she is afraid of darkness, because of what happened while she played Hide-and-Seek. Koushirou saved her from closed storage room.