琴葉 詩織

A Japanese national who is serving as a Librarian when Eito is summoned, she helps Eito and Tale get used to their new surroundings and assists the pair when they are sent to the field from the Great Library. She likes to cook and bake her own food and pastries instead of relying on Historia to summon them wholesale. She frequently assists Historia in her duties and chastises the Head Librarian when she's skiving or eating confectionery above her daily limit.

 A talented writer who once shared a dream with Hanami whereby she would write a screenplay which Hanami would act on the big stage, Shiori's career took off after graduating from high school and she worked her way up to a popular screenwriter for television. Sadly Hanami did not have the same talent in acting and the dream they shared did not come to fruition as Hanami decided to retire from acting. 

Shiori missed Hanami's final stage performance and after hearing about her best friend's retirement blamed herself for destroying their shared dream. The guilt affected her writing ability and she is in a career-threatening slump when she is summoned by the Great Library.

Although the concept of time does not apply to the Great Library, Shiori has been there for so long that her temporal point of origin differs from Eito by several years. When both of them make the decision to return, it is thanks to Historia allowing the pair to keep their Colettes which allows Shiori to remember the promise she made with Eito.

After Eito graduates from high school, she eventually works together with him as a writer under his charge. As both of them retain their Colletes, the connections they made during their stint as Librarians remain extant. /