Leave it to Nuralihyon Papa! Vol. 2
The Streaming Stars of Mount Osoroshi

Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
1st edition: 2022.06

Leave it to Nuralihyon Papa! Vol. 1
The Friends of Dororon Village

Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
1st edition: 2022.05
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Beware of Monsters, Beware of Fire, Tsukumo -san's Several Songs

"Youkai Yojin Hino Yojin, Tsukumo-san Chi no Kazoe Uta"
Text: Tomiyasu Yoko, Illustration: Yamamura Koji
Riron-sha
32pages, 21×25㎝
1st edition: 2016.02
Song of "Youkai Yojin Hino Yojin, Tsukumo san chi no kazoe uta">Site
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"Time Travel of the Specter Family"

Youkai Ikka no Jikan-Ryoko
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
20.3 x 15.6 cm, 166 pages
1st edition: 2021.06.21
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Secret Base with Specters

"Yokai-tachi to Himitsu-Kichi"
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
20.3 x 15.6 cm, 167 pages
1st edition: 2020.06
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Operation Wedding of the Specter Family

"Yokaiikka no Wedding Daisakusen"
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
20.3 x 15.6 cm
168 pages
1st edition: 2019.02
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Hot Spring Tour of the Specter Family

"Yokaiikka no Onsen Tuor"
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
20.3 x 15.6 cm
168 pages
1st edition: 2018.02
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Halloween in the Specter Family

"Yokaiikka no Halloween"
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
20.3 x 15.6 cm, 176 pages
1st edition: 2017.09
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Amusement Park Specter Family

"Yuenchi no Youkai ikka"
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
152 pages
1st edition: 2016.02
2nd editon: 2020.11.27
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Specter Brothers Go to School

"Youkai Kyodai Gakko He Iku"
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
20.3 x 15.6 cm
152 pages
1st edition: 2015.01, 2nd editon: 2015.10.07, 3rd editon: 2016.10.27
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The Specter of the Hidden Forest

Hisohiso Mori no Youkai
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
168 pages 20.3 x 15.6 cm
1st edition: 2014.02.19, 2nd editon: 2014.05.27, 3rd edition: 2015.04.22, 4th edition: 2015.06.04, 5th edition: 2019.11.29
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Summer Festival of the Specter Family

Yokai Ikka no Natsumatsuri
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
168 pages 20.3 x 15.6 cm
1st edition: 2013.01.24, 2nd edition: 2013.06.14, 3rd edition: 2013.08.09, 4th edition: 2015.06.20, 5th edition: 2015.08.12, 6th edition:  2018.06
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Specter Family Tsukumo-san

Yokai Ikka Tsukumo-san
Text: Tomiyasu Yoko
Illustration: Yamamura Koji
Riron-sha
152 pages 20.3 x 15.6 cm
1st edition: 2012.01.22, 2nd edition: 2012.06.22, 3rd edition: 2013.04.23, 4th edition: 2015.06.01, 5th edition: 2015.08.20, 6th edition: 2018.06
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