The Cat Who Saved Books (本を守ろうとする猫の話) is a 2017 novel by Sosuke Natsukawa [ja], published by Shogakukan.
Its English translation, done by Louise Heal Kawai, was published in 2021 by HarperVia.
[2] The book is about a teenage boy, Rintaro Natsuki (夏木 林太郎, Natsuki Rintarō), who stops attending high school classes after he obtains a bookshop held by his deceased grandfather.
A talking cat character,[1] named Tiger,[2] appears and helps Rintaro deal with his trauma.
[1] Louise George Kittaka of The Japan Times wrote that Rintaro has "hikikomori (reclusive) tendencies".