Kaiju No. 8: Narumi's Week Anime Short Trailer Sets September 5 Premiere
The short is a side story focused on a single character, expanding the franchise's world beyond the main plot, and it reunites the full TV anime staff, indicating a production effort on par with the main series.
Key Facts
- The Kaiju No. 8 anime short Narumi's Week at Work premieres on September 5 and has four episodes, streaming weekly on Saturdays at 8:00 p.m. JST on the TOHO animation channel.
- The final episode of Narumi's Week at Work streams on September 26, and Crunchyroll will also stream the short as it airs.
- Koki Uchiyama voices Gen Narumi in the short, with staff from the TV anime returning, including director Shigeyuki Miya and studio Production I.G.
- The short's story is conceived by Kizuku Watanabe, creator of the Kaiju No. 8: Relax spinoff manga.
- The Kaiju No. 8 manga by Naoya Matsumoto ended in July 2025 with Chapter 129, compiled into 16 volumes.
Reporting from 2 sources: Anime News Network, Anime Corner.
The official website for the Kaiju No. 8 franchise began streaming a trailer for the new anime short Narumi's Week at Work, confirming a September 5 premiere and a four-episode run. The episodes will stream weekly on Saturdays at 8:00 p.m. JST on the TOHO animation channel, with the final episode arriving on September 26. Crunchyroll will also stream the short as it airs. The story follows Gen Narumi, captain of the Defense Force's First Division and known as Japan's Strongest Anti-Kaiju Combatant, during a less-than-peaceful week at work, where his overwhelming prowess and jerky behavior lead him to skip meetings and play online games, though he sometimes faces unexpected counterattacks. Kizuku Watanabe, creator of the Kaiju No. 8: Relax spinoff manga, conceived the story. The television anime's staff returns, including director Shigeyuki Miya, character designer Tetsuya Nishio, composer Yuta Bando, and studio Production I.G. Koki Uchiyama reprises his role as Gen Narumi. The short was announced alongside the final arc of the mainline TV anime.
Each episode centers on a different side of Narumi, rather than a single continuous story. The short is directed by Yutaka Izubuchi, with Mahiro Maeda handling character designs. Studio Khara returns for the kaiju designs, and Hayato Aragaki, the 3D director on the second TV season and the Hoshina's Day Off video anime, reprises that role. Yuka Yamajō, an editing assistant on the TV anime, serves as the short's editor.
The staff also unveiled a visual tied to protagonist Kafka Hibino's birthday. The cast reunites for a "Defense Force Boot Camp in Tachikawa" event on October 24 at the Tachikawa Stage Garden in Tokyo, with its own new visual.
The first TV season aired 12 episodes starting April 2024 on TV Tokyo. The second season premiered in July 2025. The manga by Naoya Matsumoto ended in July 2025 with Chapter 129, collected in 16 volumes. The game adaptation, Kaiju No. 8 THE GAME, passed 750,000 pre-registrations and launched worldwide on August 31.
Synthesized by Yomimono from the 2 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.