Gyakusatsu Kigen Manga Gets Animated Promo Video as First Volume Ships
Sōma Saitō narrates the video, which Kodansha's Afternoon magazine posted to its YouTube channel to mark the debut compiled volume.
Kodansha's Afternoon magazine began streaming an animated promotional video for the manga Gyakusatsu Kigen on its official YouTube channel on Wednesday, according to Anime News Network. The video marks the debut of the series' first compiled book volume, which shipped on Thursday.
Sōma Saitō narrates the promotional video. Takehiro Kubota handled storyboarding, with Atsushi Ikariya and Keita Shimizu serving as key animators, and Yashikin composing the music.
Gyakusatsu Kigen is written by Shiwasu Hoshikawa and Yūichirō Momose. The pair launched the series in Afternoon on May 25.
Other projects from the two authors
Hoshikawa launched the Bungo Stray Dogs STORM BRINGER manga adaptation in Kadokawa's Monthly Shōnen Ace in January 2025, and Kadokawa shipped its first compiled volume in September 2025. Hoshikawa's Bungo Stray Dogs: Dazai, Chuuya, Age Fifteen manga, which began in Shōnen Ace in September 2022, ended with its fourth volume in October 2024.
Momose launched the Datewars project in August 2025. He was also the main scenario writer for Hypnosis Mic, which launched in September 2017 and released its first full album, Enter the Hypnosis Microphone, in April 2018.
Quick answers
When did the first volume of Gyakusatsu Kigen ship?
The first compiled book volume shipped on Thursday, a day after the animated promotional video began streaming.
Who narrates the Gyakusatsu Kigen promotional video?
Sōma Saitō narrates the video, which was storyboarded by Takehiro Kubota.
Who created Gyakusatsu Kigen?
The manga is by Shiwasu Hoshikawa and Yūichirō Momose and runs in Kodansha's Afternoon.