Hataraku Saibou

Cells at Work!

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Alternative Titles

Japanese: はたらく細胞
English: Cells at Work!
German: Cells at Work!!
Spanish: Cells at Work!
French: Cells at Work!
More titles


Type: TV
Episodes: 13
Status: Finished Airing
Aired: Jul 8, 2018 to Sep 30, 2018
Premiered: Summer 2018
Broadcast: Sundays at 00:00 (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: 7.551 (scored by 321291321,291 users)
1 indicates a weighted score.
Ranked: #16902
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #330
Members: 654,248
Favorites: 2,344

Available At


Streaming Platforms

Ranked #1690Popularity #330Members 654,248
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Episodes: /13


Inside the human body, roughly 37.2 trillion cells work energetically 24 hours a day and 365 days a year. Fresh out of training, the cheerful and somewhat airheaded Sekkekkyuu AE3803 is ready to take on the ever-so-important task of transporting oxygen. As usual, Hakkekkyuu U-1146 is hard at work patrolling and eliminating foreign bacteria seeking to make the body their new lair. Elsewhere, little platelets are lining up for a new construction project.

Dealing with wounds and allergies, getting lost on the way to the lungs, and bickering with similar cell types, the daily lives of cells are always hectic as they work together to keep the body healthy!

[Written by MAL Rewrite]

Characters & Voice Actors

Jujou Saibou

Okamoto, Nobuhiko

Gan Saibou

Ishida, Akira


Ichimichi, Mao

NK Saibou

Yukinari, Toa

B Saibou

Chiba, Shouya


Suzuki, Kenichi
Director, Script
Aketagawa, Jin
Sound Director


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Mission! Ken Kou Dai Ichi (ミッション!健・康・第・イチ)" by Sekkekkyuu (Kana Hanazawa), Hakkekkyuu (Tomoaki Maeno), Killer T Saibou (Daisuke Ono), Macrophage (Kikuko Inoue)

Ending Theme

"CheerS" by ClariS

Episode Videos


Feb 21, 2024
It's actually a very unexpected anime for me. At first I thought it would be very boring and typical. The same characters, the same situations. But I was wrong. The functioning of our body cells, viruses and bacteria and the battles between them made this anime a good show to watch and relax. Sometimes you even forget that all the events are happening in someone's body that can actually be very vulnerable. By this I mean that the owner of the body is not important and for cells - person`s body is a home at first place which they have to secure and protect.
In the ...
Mar 17, 2024
Mixed Feelings
Hataraku Saibou
This was a great and educational anime to watch, im gonna go give a 8.49 ratings for the anime.

A unique anime, packing an ordinary story with science as its attraction. It's an original concept and that's why I love it. The story offered basically only adapts to the theme brought by this anime which is a story about red blood cells. The illustrations and analogies of the characters depicted as cells in our bodies are really well executed and provide useful knowledge to the audience so that they are not only entertained but also educated. Although it is true for story lovers, this anime ...
Feb 7, 2019
This show first attracted me because I thought it looked novel, and it was. For the first four episodes. After that I was really bored with this show. I couldn't sit through the show as the story repeated over and over with no effective change. The stories follow a certain format. Red Blood Cell finds either a germ, white blood cell, or a friend red blood cell and then they act afraid as the immune system fight the germs or that episode. The show failed to make me care about any of the characters. The art doesn't look back but it can be really ...

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