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Kaiju No. 8: Narumi's Week at Work Premieres · Chronopin

AnimePosted 09/19/202609/19/2026 at 5:45 am·@AnimeDesk To timeline

Kaiju No. 8: Narumi's Week at Work Premieres

Starts 09/05/2026

Musashino, Tokyo, Japan

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Start date confirmed on the title's own MyAnimeList^[1] listing.

Start: Sep 5, 202692% CONFIDENCEfrom myanimelist.net
End: Sep 26, 202692% CONFIDENCEfrom myanimelist.net

Kaiju No. 8: Narumi's Week at Work Premieres

AniList65%

4 episodes planned

Production I.G spins Kaiju No. 8's eccentric Division 1 captain Gen Narumi off into a short original anime about his days off the battlefield.

Kaijuu 8-gou: Narumi no Heijitsu (English: Narumi's Week at Work) runs four episodes from "Sep 5, 2026 to Sep 26, 2026", at 3 min. per ep.; MyAnimeList files it as an ONA and AniList as a Special, both with status Currently Airing/Releasing.^[1][3] Wikipedia lists it as "Kaiju No. 8 Narumi's Weekday", an ONA from September 5, 2026 with 4 episodes.^[2]
It is an original short - "Original short anime about Gen Narumi"^[1], "Original anime shorts about Narumi's daily life at work"^[3] - produced by Production I.G.^[1][2][3]
Staff: directed by Shigeyuki Miya with music by Yuta Bandoh^[2], character design by Tetsuya Nishio^[1][2][3], sound director Fumiyuki Gou and art director Shinji Kimura^[1], original creator Naoya Matsumoto and original story by Kizuku Watanabe.^[3]
Cast: Kouki Uchiyama as Gen Narumi, with Genta Nakamura as Kouta Tachibana and Kana Hanazawa as Rin Shinonome; MyAnimeList also lists Soushirou Hoshina, Touko Kirimori, Kuraudo Miyake and Eiji Hasegawa among the supporting characters.^[1][3]
It carries no opening or ending themes on MyAnimeList, and links to the official site, @KaijuNo8_O and @KaijuNo8_O_EN^[1]; AniList lists Crunchyroll and a YouTube posting of episode 1, with hashtags #鳴海の平日 #今日も最強.^[3]
Classification differs between the databases: MyAnimeList gives genre Sci-Fi with an Adult Cast theme, shounen demographic, source Manga, rated PG-13^[1], while AniList gives genre Slice of Life, source Original, season Fall 2026 and a Shounen tag at 20%.^[3]
Its place in the franchise is also given differently: MyAnimeList lists the parent story as Kaijuu 8-gou 2nd Season (TV)^[1], while AniList gives the parent as Kaijuu 8-gou: Kanketsu-hen, marked "Not Yet Released", plus a sibling special Kaijuu 8-gou: Hoshina no Kyuujitsu.^[3]
Background: the parent Kaiju No. 8 anime by Production I.G aired April to June 2024 with a second season July to September 2025 - 23 episodes on TXN (TV Tokyo) from April 13, 2024 to September 27, 2025, music by Yuta Bandoh - and a "conclusion arc" has been announced; the source manga ran on Shonen Jump+ from July 2020 to July 2025 across 16 tankobon volumes and had over 19 million copies in circulation by September 2025.^[2]
Early reception: MyAnimeList scores it 6.85 from 1,388 users (ranked #5680, 22,011 members); AniList shows an average score of 64% and mean 70% with 5519 popularity.^[1][3]

0

References 384% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]92%
Kaiju No. 8: Narumi's Week at Work Premieres
myanimelist.net· Posted Sep 19, 2026· Starts Sep 5, 2026· Ends Sep 26, 2026 ✓· 33% of score
Start date confirmed on the title's own MyAnimeList listing.
[2]80%
Kaiju No. 8 on Wikipedia
en.wikipedia.org· Added Sep 19, 2026· 33% of score
Wikipedia's article on Kaiju No. 8 confirms the source^[1] manga, its author and Production I.G's role in the franchise's anime.
[3]80%
Kaiju No. 8: Narumi's Week at Work on AniList
anilist.co· Added Sep 19, 2026· 33% of score
AniList's entry corroborates the studio, format and start date.

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11 episodes

65%

4 episodes planned

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