Gyakusatsu Kigen Manga Gets Animated Promotional Video
The official YouTube channel for Kodansha's Afternoon magazine began streaming an animated promotional video on Wednesday to celebrate the debut of the first compiled book volume for Shiwasu Hoshikawa and Yūichirō Momose's new manga Gyakusatsu Kigen (Genocide Origin). The volume shipped on Thursday. Sōma Saitō narrates the video.
Takehiro Kubota (My Happy Marriage) storyboarded the video, with Atsushi Ikariya and Keita Shimizu as key animators. Masakazu Miyake and Taichi Maezuka drew the backgrounds. Tetsuya Tatamitani was the editor and the compositing director of photography. Yashikin composed the music. Ippei Tomari is credited for sound effects and casting.
The manga is set in a Japan that is wracked with everyday news of brutal crimes. The high schooler protagonist Rakki is rescued from a fight with a classmate by a delinquent known as "A." Then vicious murderers known simply as "K" and "D" appear before them, and Rakki learns of the murder of his classmates.
Hoshikawa and Momose launched the manga in Afternoon on May 25.
Hoshikawa launched the Bungo Stray Dogs STORM BRINGER manga adaptation in Kadokawa's Monthly Shōnen Ace magazine in January 2025. The manga is an adaptation of the eighth light novel of the same title in Kafka Asagiri and Sango Harukawa's Bungo Stray Dogs light novel series. Kadokawa shipped the first compiled book volume in September 2025.
Hoshikawa's Bungo Stray Dogs: Dazai, Chuuya, Age Fifteen manga ended with its fourth and final compiled book volume, which shipped in October 2024. Hoshikawa launched the manga in Kadokawa's Shōnen Ace magazine in September 2022. The manga is based on the seventh light novel volume of the same title that shipped in August 2019, and explores the past of the characters Osamu Dazai and Chuuya Nakahara. Yen Press publishes the manga in English.
Momose launched the Datewars project in August 2025, with Hanaharu Naruko (Kamichu!, Gargantia on the Verdurous Planet, Kandagawa Jet Girls) as character designer, and Mino as music producer, video creator, and music commentator. The "timeless music IP project" aims to bring new life to musical styles from the 70s to the 2000s, and involves 14 voice actresses, with plans for the franchise to expand into manga, anime, mobile games, concerts, films, and stage events.
Momose is the main scenario writer for Hypnosis Mic. King Records' rap-themed project features voice actors who rap in the personas of original characters, and it launched in September 2017. Hypnosis Mic's first full album Enter the Hypnosis Microphone launched in April 2018. The group earned the top spot as the most popular voice actor Twitter account in Japan for 2018.
Sources: Afternoon YouTube channel, Comic Natalie
Disclosure: Kadokawa World Entertainment (KWE), a wholly owned subsidiary of Kadokawa Corporation, is the majority owner of Anime News Network, LLC. One or more of the companies mentioned in this article are part of the Kadokawa Group of Companies.KioskNews shows a cleaned-up reading view extracted from the publisher’s page — the original always lives on their site, not ours.