Cells at Work! Code Black

is a Japanese manga series spin-off to Cells at Work! by Akane Shimizu. The manga was written by Shigemitsu Harada and illustrated by Issei Hatsuyoshiya. It was serialized in Kodansha's seinen manga magazine Morning from June 2018 to January 2021, and was licensed in North America by Kodansha USA. An anime television series adaptation produced by Liden Films aired from January 10 to March 21, 2021. Plot In contrast to the main series, which is set in a generally healthy human body, Cells at Work! Code Black is set in a "black" environment of a body suffering an unhealthy lifestyle. The story follows the anthropomorphic cells struggling to maintain the body against threats such as smoking, excessive alcohol consumption, and sexually transmitted diseases. Characters AA2153 is one of the two protagonists. He is a rookie erythrocyte that had started working inside a poorly maintained body, and thus an abusive work environment. As a rookie, AA2153 was initially excited for his task of going to the lungs, only to find LDLs, Carbon Monoxide, and Pneumococcus along the way. He is dedicated to doing his part in helping the body, but is strongly disheartened by the awful work conditions and failure of the body to improve. He develops a friendship with U-1196, a neutrophil who frequently rescues him and serves as a source of encouragement, as well as AC1677, a fellow Red Blood Cell with whom he frequently works side-by-side. /