In/Spectre Books in Order
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The In/Spectre series by Chashiba Katase includes 21 books published between 2011–2025.
Publication order
In the order the books were originally released.
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Buy on Amazon2016 · Chashiba Katase
KINDRED SPIRITS The 17-year-old Kotoko has a unique situation. When she was a child, she was kidnapped by spirits called yōkai, and returned missing…
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Buy on Amazon2017 · Chashiba Katase
EX FACTOR Kotoko investigates the mysterious death of former idol Karin Nanase, who now terrorizes the sleepy town of Makurazaka as “Steel Lady…
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Buy on Amazon2017 · Chashiba Katase
The new mystery thriller with a romantic edge from the creator of Blast of Tempest, and The Record of a Fallen Vampire! FALSE IDOL The uneasy trio of…
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Buy on Amazon2017 · Chashiba Katase
STRANGER THAN FICTION Whether or not the spectre of a dead idol is real, the urban legend of “Steel Lady Nanase” feeds people’s imaginations and…
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Buy on Amazon2017 · Chashiba Katase
TRUTH TO POWER With the violence and the urban legend of Steel Lady Nanase only continuing to grow in power, it's up to Kotoko to put a stop to her…
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2011 · Kyō Shirodaira
In/Spectre, also known as Invented Inference in Japan, is a 2011 Japanese novel written by Kyo Shirodaira and published by Kodansha. It was…
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Buy on Amazon2018 · Chashiba Katase
The new mystery thriller with a romantic edge from the creator of Blast of Tempest, and The Record of a Fallen Vampire! Both touched by spirits…
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Buy on Amazon2018 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 13+ WHEN YOU WISH UPON A STAR…
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Buy on Amazon2019 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 13+ A BATTLE OF WITS Even the…
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Buy on Amazon2019 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 13+ RIKKA RETURNS It's been…
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Buy on Amazon2020 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 13+ A SUPERNATURAL COLD CASE…
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Buy on Amazon2020 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ ANY LAST WORDS? As Rikka…
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Buy on Amazon2021 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ DOWN MEMORY LANE To fulfill…
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Buy on Amazon2021 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ A Troublesome Enemy Kotoko's…
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Buy on Amazon2022 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ THE KIRIN’S CURSE A deadly…
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Buy on Amazon2022 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ A DESPERATE COUNTERATTACK…
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Buy on Amazon2023 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ Mysterious Chills The case…
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Buy on Amazon2023 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ Kotoko delves into a…
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Buy on Amazon2023 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ The AI Phenomenon Kotoko’s…
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Buy on Amazon2024 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ Both touched by spirits…
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Buy on Amazon2025 · Chashiba Katase
A fantasy/mystery series with a unique Japanese flavor perfect for fans of Noragami: Stray God and Tokyo Ghoul. Ages 16+ Means, Motive, and…
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✓ = numbering verified against the publisher's official series list.
📅 = publisher-announced release date; subject to change. All upcoming releases →
Frequently asked questions
What order should I read the In/Spectre books in?
Read them in publication order, starting with “In/Spectre 1”. Start with “In/Spectre 1.”
How many books are in the In/Spectre series?
We list 21 books by Chashiba Katase , published between 2011–2025.
When is the next In/Spectre book released?
The next book is “In/Spectre 22”, book 22 in the series, expected Mar 2, 2027. That is the publisher's announced date and can change; this page updates when it does.
Where can I buy the In/Spectre books?
Each title above links to Amazon. See our affiliate disclosure.
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Reading order compiled from author/publisher guidance and verified bibliographic data. Spotted a wrong order, a missing book, or any other mistake? and we'll correct it.