Sanae

In-game description (Initial)
Always mumbling and muttering about something. She also acts suspiciously, and it seems she keeps to herself. She's a little weird.

Personality
She has a crush on Tsubasa, which is likely why she stalks him and tries to break up his relationship with Shizuka. Sanae thinks that she might be using him for her own gain. This hints at a distrust of others, and Sanae's status as an outsider to the popular girls' group corroborates this. She shows some general anxiety in her behavior, fidgeting, mumbling and not making friends.