The middle sister, Aruto is strong-willed, an excellent cook and has the ability to sleep anywhere. She is a talented writer and illustrator. Unknown to Kokoro, she has published several novels under the pen-name Himemiya Kirin.

Kokoro Toshokan, a small library, lies nestled in an unpopulated mountain far away from town. Three sisters, Iina, Aruto and Kokoro, call the library home and run it from day to day. Kokoro is just beginning her adventures at the library. Will she become a full-fledged librarian? Will the remote library ever attract readers? Kokoro tries her best to make her dreams come true at Kokoro Library, a place where miracles can happen.
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(Source: Anime News Network)

Birth name: Yumi (由美) Ichihara (市原)

Kokoro is a girl that works with her two older sisters at a library with the same name at hers. The problem is that the library is far away from the nearast town so people seldom come to the library. Follow Kokoro and her sisters as they try to uphold the legacy of their father. <br><br>
It's a lighthearted, slice-of-life manga.
