Book 1

In/Spectre 1

by Kyou Shirodaira and Chasiba Katase

Published 22 November 2016
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 one leg and one eye. Since then, she has been able to communicate with otherworldly forces, both benevolent and dangerous. Kotoko is alone in her power until she learns that the crush she's watched from afar, Kurō, has had his own encounter with yōkai! As if being touched by the supernatural wasn't enough, Kurō's personal life is also in shambles. With their shared experiences and understanding, Kotoko and Kurō form a partnership to deal with mysteries, from ancient demons to the ghost of an idol. But for a girl who's used to dealing with spirits, winning love might prove to be the bigger challenge!

Book 2

In/spectre Volume 2

by Kyou Shirodaira and Chasiba Katase

Published 10 January 2017
Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is a shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives.

Book 3

Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is a shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives.

Book 4

Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is a shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives.

Book 5

In/Spectre 5

by Kyou Shirodaira and Chasiba Katase

Published 18 July 2017
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 once and for all—and quickly! Her mission is complicated by the likelihood that Kurô's sickly cousin, Rikka, is the mastermind behind it all. Kotoko gathers "four solutions" to destroy the truth that Rikka has brought to life, but can a lie destroy a fictional monster and create a new truth? Armed only with these imaginative solutions, Kotoko, Kurô, and Saki kick off the decisive battle with Steel Lady Nanase.

Book 6

In/Spectre 6

by Kyou Shirodaira and Chasiba Katase

Published 26 September 2017
INDUCTIVE REASONING

“Steel Lady Nanase”—the urban legend of a faceless, bloodthirsty phantom who had once been a voluptuous idol— as gone from myth to terrifying reality thanks to Rikka’s powers. In order to defeat this fictitious monster, Kotoko continues to present her “four solutions” to create a new “truth,” as Kurô uses his abilities to defeat the spectre once and for all. With two solutions rejected and only two remaining, canKotoko’s invented inference put the myth of the Steel Lady to rest once and for all, or is the fate of her and Kurô’s futures completely out of her hands?

Book 7

Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is a shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives.

Book 8

In/spectre Volume 8

by Kyou Shirodaira and Chasiba Katase

Published 14 August 2018
Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is a shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives.

Book 9

In/spectre Volume 9

by Kyou Shirodaira and Chasiba Katase

Published 26 February 2019
Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is a shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives.

Book 10

In/spectre Volume 10

by Kyou Shirodaira and Chasiba Katase

Published 22 October 2019
Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is a shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives.

Book 11

In/Spectre 11

by Kyou Shirodaira and Chasiba Katase

Published 25 February 2020
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

Twenty-three years ago, Sumi Otonashi was killed in a mugging gone wrong. Or was she? Out of nowhere, her husband Gôichi reveals to his heirs that he killed her--and challenges them to figure out how. But can they reach a plausible explanation without knowing he contracted a spectre to do the deed? And what will their own buried secrets bring to light? Kotoko will have to judge the heirs' solutions, and lead them to the right answer...

Book 12

In/Spectre 12

by Kyou Shirodaira and Chasiba Katase

Published 25 August 2020
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 continues her solitary journey, she makes the acquaintance of one of Kotoko's high school friends, who reminisces fondly of their days in the Mystery Appreciation Club theorizing about dying messages. Meanwhile, a snow demoness has a request for Kotoko, hoping the revered Goddess of Wisdom can find a way to exonerate her human friend of some very serious charges...

Book 13

In/Spectre 13

by Chasiba Katase

Published 23 March 2021
Both touched by spirits called yokai, Kotoko and Kuro have gained unique superhuman powers. But to gain her powers Kotoko has given up an eye and a leg, and Kuro's personal life is in shambles. So when Kotoko suggests they team up to deal with renegades from the spirit world, Kuro doesn't have many other choices, but Kotoko might just have a few ulterior motives...