I did not enjoy this one, unfortunately.
It's a simple and elegant premise: Teach how the Cells in a body work, by characterising them as characters and have them interact and fight against bacteria and germs. Have a fun adventure, some cool action scenes while learning about the human body.
It's a lot like the cartoon from the 80s, called Once Upon a Time... Life. I really liked it as a child and was hoping for a similar experience here. Alas, I have a couple of problems with this book.
The Mangaka tries to introduce new cells and invasive bacteria in each story. The job of the cells is often summarised in large text boxes, headlined by the technical term of the cell, that is being introduced. This disrupts the story and is quite tedious to read and feels inelegant.
This type of story telling also has another big issue: The stories feel incredibly repetitive. Poor innocent red blood cell finds an invader and is saved by the white blood cell, who fights the invader in close combat. Rinse and repeat. In addition, the stories don't flow into each other, but it's more of an episodic story telling, which does not motivate me to keep reading, as there are no cliffhangers and barely any plot twists.
I can praise the artwork however, it is top notch and the highlight of the book. The cells and the invaders have a really cool design (for the most part).
The omnibus edition by Kodansha is very flimsy and doesn't feel like it will hold up more than a handful or readthroughs.
There is a second omnibus volume, but I don't see any reason to come back to this one. Pity!