is a Japanese novel series written by Shogo Imamura. It began publication under Shodensha's Shodensha Bunko imprint in March 2017. Twelve volumes and a short story collection have been published as of March 2022. A manga adaptation of the first novel illustrated by Shinobu Seguchi began serialization in Akita Shoten's manga magazine "Weekly Shōnen Champion" in April 2025. An anime television series adaptation of the first novel produced by SynergySP is set to premiere in Q1 2026.
Media.
Manga.
A manga adaptation of the first novel, "Hikuidori", was announced on February 26, 2025. The manga is illustrated by Shinobu Seguchi and began serialization in Akita Shoten's manga magazine "Weekly Shōnen Champion" on April 24, 2025.
Anime.
An anime television series adaptation of the first novel was also announced on February 26, 2025. The series is produced by SynergySP and is set to premiere in Q1 2026.