Cells at Work! Wiki
Cells at Work! Wiki

Bacteria at Work (はたらく細菌 Hataraku Saikin?) is a spin-off written and illustrated by Haruyuki Yoshida, and supervised by the author of the original, Akane Shimizu.[1]

As of February 2019, there have been four volumes published. The manga ended on July 3rd, with the seventh and final volume to be released on August 6th.


The series is set in a world of anthropomorphic bacteria (instead of cells) living in a body. It focuses on the bacteria colonies living inside the intestines of a high school girl. The portrayal of bacteria in this manga is different from the original, taking the form of humans living in an overall peaceful community instead of invading alien bodies.

List of Chapters

Volume 1

No Title Japan release date English release date
01 "Come Forth, Stinky Farts! Antibacterial Turf War" (?) July 7, 2020
02 "Edible Fiber Incoming! The Good Bacteria Strike Back!" (?) July 7, 2020
03 "Between Encampments - a Micro Meeting!" (?) July 7, 2020
04 "Constipation Consternation! The Bifidum Blues" (?) July 7, 2020
05 "The Most Numerous Bacterium in the Intestines is Me, Bacteroides!" (?) July 7, 2020
06 "Names aren't Everything! Cry of the E. Coli" (?) July 7, 2020
07 "I'll Put Some Pep in your Step! Lactobacillus" (?) July 7, 2020
08 "Skin Condition Crisis! Staphylococcus Epidermis vs. Staphylococcus Aureus" (?) July 7, 2020
09 "I'll Live on your Skin ★ Malassezia Fungus" (?) July 7, 2020
10 "Dropping in ★ along with Your Food! Natto Bacteria" (?) July 7, 2020
11 "Intestinal Ruin?! Salmonella (First Half)" (?) July 7, 2020

Volume 2

No Title Japan release date English release date
12 "Intestinal Ruin?! Salmonella (Second Half)" (?) August 4, 2020
13 "Let's Make Magnificent Cavities! Team Cavity Bacteria" (?)
14 "What're you doing in the Intestines? Yogurt Bacteria" (?)
15 "The Pimple's Source: Acne! (Propionibacterium Acnes)" (?)
16 "Along with Meat... hehehe ♡ Aspergillus Oryzae (Koji Mold)" (?)
17 "Th-that Stinks! What on Earth is that Fluffy Bacterium?!" (?)
18 "It's in your Mouth No Matter What?! Periodontal Disease Bacteria" (?)
19 "Th-th-that Itches! Athlete's Foot Fungus" (?)

Volume 3

No Title Japan release date English release date
20 "Bow Down Before Me. 0157" (?) September 1, 2020
21 "Into the Intestines Together with Vegetables! Butyric-Acid Bacteria" (?)
22 "It Absorbs Fat?! Sake Lees!" (?)
23 "Who do Bad Bacteria Exist...? The Agony of Staphylococcus Aureus" (?)
24 "I have Bad Skin even though I'm on top of Skin Care... the Cause is the Gut?!" (?)
25 "Stop Holding Back on going to the Bathroom!" (?)
26 "What Happens if you don't eat Meat...? Nutrients and the Gut " (?)
27 "Even around the Eyes! Fierce Battle and the Sty" (?)