Unprecedented! Kazuki Kamijo's 'The Prisoner of the Poltergeist' Ranks #1 in 'This Horror is Amazing! 2026 Edition', Securing the Top Spot for Two Consecutive Debut Works

The Prisoner of the Poltergeist, written by Kazuki Kamijo and published by Tokyo Sogensha in June 2026, has won first place in the domestic category of Takarajimasha's 'This Horror is Amazing! 2026 Edition.'

This is the second installment in the 'Ashiya Paranormal Investigation' series, following 'The Telepath of the Abyss,' which gained attention by winning the 1st Sogen Horror Novel Award, first place in the Best Horror 2024 Domestic Category, and first place in 'This Horror is Amazing!' last year. This new release also secured first place in the Best Horror 2025 Domestic Category, achieving a total of five awards.

Synopsis

Haruko Ashiya and Sota Koshino of 'Ashiya Paranormal Investigation' receive a request from a client troubled by a poltergeist in an old house. The duo deduces patterns from poltergeist phenomena around the world, develops unique countermeasures, and confronts the paranormal. Just when they think the phenomena have subsided, the client vanishes. Furthermore, strange occurrences begin to plague the surroundings of both Haruko and Koshino.

Bookstore Staff Feedback for 'The Prisoner of the Poltergeist'

"Feeling death nearby and being toyed with by fear. My heart rate kept rising due to the tension building up toward the climax, which approaches the truth. After reading, I felt as if I had watched a movie. It is highly readable, and the balance between entertainment and horror is superb!" Mayumi Ikejiri, Kinokuniya Bookstore, Kurume Store

"After reading this horror book, I was too afraid to look in the mirror. The level of terror and awe is peak. I would definitely recommend it to others." Mari Yamanaka, Junkudo Bookstore, Shiga Kusatsu Store

"I felt an incredible excitement from the terror that can only be experienced in Kamijo's stories. I could keep turning the pages at the same speed. The interest never stopped, there was no mid-story slump, and it was extremely scary. This is something extraordinary." Rieko Iga, Fukuoka Kinbundo, Shima Store

Series Sequel to be Published This Autumn!

Furthermore, a new series installment and conclusion is scheduled to be published in Autumn 2026. In a hotel chapel, a writer who was skeptical of 'Ashiya Paranormal Investigation' is found dead. Based on the crime scene situation, the only person who could have done it is Haruko Ashiya—but she definitely did not kill him. To clear her suspicion, she must prove that the crime was committed by something non-human. The greatest crisis for Haruko and Koshino charges in an unexpected direction.

Please take this opportunity to read 'The Telepath of the Abyss' and 'The Prisoner of the Poltergeist,' and look forward to the series' grand finale.

Author Profile

Kazuki Kamijo

Born in Nagano Prefecture in 1992. Graduated from Waseda University. Active as a writer under the pen name 'Kamijo' on the web media 'Omocoro.' He made his debut by winning the Sogen Horror Novel Award for 'The Telepath of the Abyss' (original submission title: 'Para-Psycho'). The same work was voted number one in the reader poll project 'Best Horror 2024 (Domestic Category)' hosted by Mr. Unga Asamiya and in 'This Horror is Amazing! 2025 Edition' (Domestic Category).

Bibliographic Information

The Prisoner of the Poltergeist

Format: Shiroku-ban paperback Pages: 340 pages Release Date: June 27, 2025

ISBN: 978-4-488-02928-9 C-code: C0093

Cover Art: POOL

Price: 1,870 yen (tax included) Book Design: Kaori Okamoto (next door design)

Tokyo Sogensha Co., Ltd.

Location: 1-5 Shin-ogawamachi, Shinjuku-ku, Tokyo 162-0814 Representative Director: Kentaro Shibuya URL: https://www.tsogen.co.jp/np/index.html