Sōsuke Natsukawa Books In Order

Publication Order of The Cat Who... Books

Sosuke Natsukawa

Sosuke Natsukawa is a Japanese physician and novelist, so he brings a somewhat unusual blend of science and imagination to his writing. His medical training has not made his stories cold or technical. Instead, it seems to give him a clear eyed way of looking at people, which helps his fantasy worlds feel grounded in real emotions. Readers often find that balance refreshing because the books are strange enough to be exciting but never too wild to follow.

One thing Natsukawa does really well is build characters who feel like actual people you might know. They are not overly heroic or complicated, just easy to root for and surprisingly real. He also has a natural talent for keeping the story moving without rushing or dragging, so you never get bored or lost. That simple, steady pace makes his novels a pleasure to read, whether you are new to fantasy or already a big fan.

Another strength is how he builds his plots with just enough mystery and heart to keep you curious. Nothing feels made up just for shock value, and nothing gets too sweet or dramatic. The narrative flows in a way that feels both thoughtful and fun, like a good conversation with a smart friend. That is probably why so many people enjoy his work. It is honest, warm, and never trying too hard to impress.

His enjoyment comes through on the page, and that feeling spreads to the reader. He never tries to be something he is not, so his books have a relaxed confidence. The characters face strange situations, but they react in ways that feel normal and human. That mix of the odd and the everyday keeps the reading experience light, fresh, and genuinely fun without ever feeling forced.

Looking ahead, Natsukawa shows no sign of stopping. She continues to write at her own steady pace without rushing or repeating herself. Fans can expect more stories that feel just as thoughtful and personal as the ones before. There is plenty more to come, and it will likely be worth the wait.

Early and Personal Life

As a child, Sosuke Natsukawa found a quiet kind of joy in books. That early love for reading slowly turned into a wish to write his own stories. Like many popular writers, he spent a lot of time lost in other people’s worlds before trying to build his own.

He later went to medical school at Shinshu University and became a working physician. Today, he sees patients at a hospital in Nagano, a mostly rural part of Japan. That calm, slower paced environment seems to give him both a steady job and the mental space to write.

His work as a doctor likely shapes the way he sees people, but his fantasy novels grew from that old childhood spark. He did not plan to become a writer all at once. Instead, he grew into it over time, finding inspiration from real life and from the simple act of reading, just as many successful authors have done before him.

Writing Career

Sosuke Natsukawa began his writing career with a multi volume debut novel called Kamisama no Karute, which in English means God’s Medical Records. That first book won several prizes and sold more than three million copies just in Japan. It was a strong start for someone who was still working full time as a physician.

He later wrote The Cat Who Saved Books, which became an international bestseller. The second book in that same series, featuring a talking tabby cat named Tiger, is called The Cat Who Saved the Library. Natsukawa is still writing today, so readers can expect more stories from him in the future.

The Cat Who Saved Books

Sōsuke Natsukawa wrote “The Cat Who Saved Books,” with translation by Louise Heal Kawai. HarperVia published the magical realist fantasy novel on December 7, 2021. The book stands as the first entry in the “The Cat Who…” series.

After his grandfather passes away, Rintaro Natsuki feels completely alone and heartbroken. He also faces the likely closing of Natsuki Books, a small used bookshop his grandfather built on the edge of town. One day a talking tabby cat named Tiger shows up and asks Rintaro for help, needing a book lover for a special mission. Together they go on three magical trips to rescue books from people who have locked them away or treated them badly, and then Rintaro must try one last rescue by himself.

Readers who pick up this book will likely find the story warm and easy to enjoy. The talking cat and the quiet bookshop give the plot a gentle, friendly feel. Many will appreciate how the main character grows through each small adventure. It is a solid choice for anyone who likes magical tales with heart.

The Cat Who Saved the Library

Sōsuke Natsukawa is the author of “The Cat Who Saved the Library,” with translation by Louise Heal Kawai. HarperVia published this magical realist fantasy on April 8, 2025. The book is the second in the “The Cat Who…” series.

Thirteen year old Nanami has chronic asthma, so she cannot play sports or hang out with friends after school. That does not stop her from reading, and she spends much of her free time happily alone in the school library. One day she notices that some of her favorite books, including classics like Arsène Lupin and Anne of Green Gables, are vanishing from the shelves, but the library staff does not take her seriously. Shortly after she spots a strange man in a gray suit and has an asthma attack while chasing him, Tiger the talking tabby cat shows up to help, and together they must face gray soldiers burning books in a stone castle, while the hero Rintaro is nowhere to be found.

Anyone new to this book will find a brave young heroine and a talking cat worth rooting for. The story moves at a nice pace and mixes real life challenges with magical moments. Fans of the first book will enjoy seeing how the adventure continues with fresh faces. It is a warm and easy read that leaves a person feeling good.