As of February 2019, there have been four volumes published. The manga will end 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.