is a slice-of-life Japanese manga series by Nobuyuki Takagi and Yōsuke Kuroda, originally serialized between April 2000 and July 2002 in Monthly Comic Dengeki Daioh. It follows the peaceful daily lives of three sisters who live in a library. The manga was adapted into a 13-episode anime television series directed by Koji Masunari, who is also known as the director of the anime OVA series Read or Die (2001) and Kamichu! (2005). It is described by critics as a prime example of the iyashikei or "healing type" anime genre. Plot Kokoro Library is a heartwarming slice of life series depicting the peaceful everyday lives of three orphaned sisters as they take care of the library which also serves as their family home. The anime delves more deeply into the library's history, its connection to the local town, and challenges faced by the sisters. Kokoro, the youngest, has just joined her sisters Aruto and Iina as an official librarian. The library receives few visitors, and each visit is often the subject of an entire episode. Kokoro learns the meaning of being a librarian, meets her favourite author, and takes a family trip to the seaside. The library is called "the place where miracles happen", although we see nothing more magical than Kokoro's ability to produce rainbows with her watering can. Events take a dramatic twist when phantom thief Funny Tortoise steals a mysterious locked book which belonged to Kokoro's father, who died when she was very young. Worse, the town mayor announces that the library will be closed due to lack of visitors. Kokoro is heartbroken, but believes the answer may lie in the stolen book, which has meanwhile been returned to the library. The next episode is seen from the point of view of a young soldier named Sant Jordi, during a war which has seen the town heavily bombed. Jordi's positive attitude makes an impression on his comrades, who occupy a ruined library. When the town is approached by an enemy armored division, Jordi's decision to destroy the bridge without killing the enemy ultimately saves the town. He begins to distribute library books to the townsfolk to lift their spirits in the difficult post-war period, ultimately settling in the town and constructing Kokoro Library. Kokoro, reading the story in what is revealed to be her father's diary of the war, finally has a connection to the parents she never