Cells at Work! CODE BLACK

'''Cell at Work! BLACK '''is a spin-off written by Shigemitsu Harada, illustrated by Ikuta Hatsuya, and supervised by the author of the original, Akane Shimizu.

Plot
Similar to the original, the series is set in a world of anthropomorphic cells working in a body. It follows a the life of a rookie Erythrocyte, AA2153, and a Neutrophil, U-0001, as they work in a poorly maintained, middle-aged body burdened by issues such as stress, smoking, drinking and the like, causing complications in the cells' work and living environment.

The series is set to tackle darker content than the original, thus the name 'BLACK'.