Hataraku Saibou!!

Cells at Work!!

What would you like to edit?

Alternative Titles

Synonyms: Cells at Work! 2nd Season, Hataraku Saibou 2nd Season
Japanese: はたらく細胞!!
English: Cells at Work!!
German: Cells at Work!
Spanish: Cells at Work!
French: Les Brigades immunitaires
More titles


Type: TV
Episodes: 8
Status: Finished Airing
Aired: Jan 9, 2021 to Feb 27, 2021
Premiered: Winter 2021
Broadcast: Saturdays at 23:30 (JST)
Licensors: Aniplex of America
Studios: David Production
Source: Manga
Genre: ComedyComedy
Themes: AnthropomorphicAnthropomorphic, EducationalEducational, MedicalMedical
Demographic: ShounenShounen
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.361 (scored by 9093390,933 users)
1 indicates a weighted score.
Ranked: #23322
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #874
Members: 262,612
Favorites: 581

Available At


Streaming Platforms

Ranked #2332Popularity #874Members 262,612
Add to List
Episodes: /8
* Your list is public by default.


The cells of the human body never rest for too long; there's always something new to do and learn every day. At least, that's what Hakkekkyuu U-1146 feels as he rushes to and fro, searching for any pathogens that could cause harm to the body. Despite his dangerous line of work, it's all worth it to protect the happy smiles of Sekkekkyuu AE3803, the platelet crew, his fellow neutrophils, and the other cells he meets along the way.

In his latest pathogen-hunting adventures, Hakkekkyuu U-1146 discovers how important cells can sometimes make mistakes, and that not all bacteria are actually bad. Everybody has their bad days, but everything eventually works out when their comrades have their backs. In the end, it's just another normal day for these hardworking cells!

[Written by MAL Rewrite]


No background information has been added to this title. Help improve our database by adding background information here.

Episode Videos

Related Anime

Characters & Voice Actors


Ogura, Hirofumi
Soejima, Yasufumi
Episode Director
Ueno, Takehiro
Episode Director, Storyboard
Chiba, Daisuke
Episode Director


Opening Theme

Apple Music
Amazon Music
Youtube Music
"GO! GO! Saibou Fiesta" by Sekkekkyuu (Kana Hanazawa), Hakkekkyuu (Tomoaki Maeno), Killer T Saibou / Memory T Saibou (Daisuke Ono), Macrophage (Kikuko Inoue), Ippan Saibou (Yuusuke Kobayashi), Nyuusankin (Yuuri Yoshida)

Ending Theme

"Fight!!" by ClariS


Feb 25, 2021
I feel like this show needs no introduction for the myriad of you who've watched Season 1 way back in 2018. The TL;DR is this: our favorite body cells are back at it again, resuscitating a healthy body from many of the immune diseases as inspired and suffering from real life, but giving it the anime flare and feel that's basically one and the same from Season 1.

The only reason why we have a Season 2 in times like now, is because the spin-off (which is Hataraku Saibou Black, or Cells at Work: Code Black) is chosen to air in Winter 2021, so both mangaka ...
Feb 25, 2021
Mixed Feelings
TLDR: if you liked the first season - you will most likely like this one. If you did not - don't waste time.

Story: basically it is more of the same stuff, out cells doing their work and overcoming different situations. It is really nothing much to speak about, considering this season is only 2/3 of a normal season in length.
Art, sound: the same as S1, solid but nothing stellar.
Characters: once again, more of the same. Most of the characters were already established in the first season (or at least had episodical role), so you know what to expect. No real character progression if by ...
Feb 25, 2021
There are a few episodes that sync up with Code Black, which aired at the same time. For example, both shows may talk about hair or something. So that might be more fun for you to watch both simultaneously.

Too many corners are cut in the animation department. CGI red blood cells walking around.
Educational value is decent except for the last two episodes which is nothing but action scenes and a bacteria that wears a fox fursuit.

Two episodes with platelets and a few more with the lactic acid bacteria. So you won't completely waste your time watching this, but you can tell they're trying ...

Interest Stacks

20 Entries · 2 Restacks
50 Entries · 29 Restacks
50 Entries · 23 Restacks


Recent News

Winter 2021 Simulcast List [Update 2/25]

Winter 2021 Simulcast List [Update 2/25]

In this thread, you'll find a comprehensive list of anime acquired for simulcast release during the Winter 2021 season. Anime series licensed for home video rel...read more

Q1 2021 Anime & Manga Licenses [Update 3/24]

Q1 2021 Anime & Manga Licenses [Update 3/24]

In this thread, you'll find a comprehensive list of anime and manga licensed in the second quarter (Jan-Mar) of 2021. Winter 2021 anime which were licensed befo...read more

Recent Forum Discussion

Poll: Hataraku Saibou!! Episode 8 Discussion ( 1 2 3 )
yvsei - Feb 25, 2021
100 repliesby FarCritical »»
May 14, 8:02 PM
Poll: Hataraku Saibou!! Episode 7 Discussion ( 1 2 )
Stark700 - Feb 18, 2021
55 repliesby FarCritical »»
May 14, 7:16 PM
Poll: Hataraku Saibou!! Episode 6 Discussion ( 1 2 )
removed-user - Feb 11, 2021
54 repliesby FarCritical »»
May 14, 9:28 AM
Poll: Hataraku Saibou!! Episode 5 Discussion ( 1 2 )
removed-user - Feb 4, 2021
54 repliesby FarCritical »»
May 13, 9:12 AM
Poll: Hataraku Saibou!! Episode 4 Discussion ( 1 2 )
yvsei - Jan 28, 2021
63 repliesby FarCritical »»
May 13, 7:23 AM

Recent Featured Articles

The Winter 2021 Seasonal Catch-up Guide

The Winter 2021 Seasonal Catch-up Guide

Everything you need to be sequel-ready for a whole new season of exciting anime!

by Shymander


How to Navigate the Ultimate Anime Weekend

How to Navigate the Ultimate Anime Weekend

Anime Expo Lite, Aniplex Online Fest, FunimationCon—with so much going on this weekend (including our own panel), here's how to plan and what to look out for!

by Shymander


It’s time to ditch the text file.
Keep track of your anime easily by creating your own list.
Sign Up Login