秋月 つづり

A well-mannered junior who's really into inter-human relations. While she's refined, she isn't too stiff and with her gentle demeanor she's capable of putting others on the pedestal. 

For some reason she comes to respect Ryouichi and honestly responds with "well well" "oh my" "I see" to everything he teaches her, making it fun for him to teach her.

Tsuzuri is very intellectual and doesn't allow her pace to crumble. Capable of making do with others and her own pace, it could be said that she applies her human-relations skill to her own heart as well.