

Cells at Work! CODE BLACK
Season 1
TV-14
In a human body, trillions of cells work tirelessly to keep the host alive. "Hataraku Saibou Black" follows the battle waged by these cells against the owner's unhealthy habits, fighting to safeguard his well-being.
Where to Watch Season 1
13 Episodes
- Smoking, Bacteria, and the Beginning of the EndE1
Smoking, Bacteria, and the Beginning of the EndInside the human body, the Red Blood Cells that were produced after erythroblast enucleation, watch an orientation video explaining that they will be going to a fun work environment, but they find themselves at the mercy of their seniors who make unreasonable demands to them without explaining anything about the job. Red Blood Cell (AA2153) carries oxygen all over the body while still in a state of bewilderment, and is shocked to find that the cells he saw in the orientation video are now overworked and look like a mess… - The Liver, Alcohol, and PrideE2
The Liver, Alcohol, and PrideThere are no such things as rookies in this workplace. Even on the first day of the job, Red Blood Cell (AA2153) and his coworkers have to carry oxygen throughout the body without rest. Red Blood Cell (AA2153) sits down after an exhausting day of work when a veteran Red Blood Cell appears in front of him. “This is just my hunch as a veteran… but on a day like this, it’s going to pour.” Red Blood Cell (AA2153) has no idea what the veteran means by this, but immediately afterwards, they find themselves caught in a shower of alcohol. The Red Blood Cells make their way to the liver to relieve their stress from work… - Overwork, Hair Loss, and DeliriumE5
Overwork, Hair Loss, and DeliriumRed Blood Cell (AA2153) has gained confidence in his work after overcoming numerous obstacles. Along with White Blood Cell, he vows to create a better world and is overcome with a sense of purpose in his work, but shortly after, inflammation is found in the hair follicles. Red Blood Cell discovers that the Killer T Cells, who are normally reliable colleagues, are attacking Hair Matrix Cells and destroying the follicles. - Kidneys, Kidney Stones, and TearsE6
Kidneys, Kidney Stones, and TearsRed Blood Cells AA2153 and AC1677 are getting familiar with the job and have enough energy to joke about during their downtime. When they arrive at the efferent arteriole, they hear a ominous sound of something blocking the nearby ureter. - Calves, Pulmonary Embolism, and Quick ThinkingE8
Calves, Pulmonary Embolism, and Quick ThinkingDue to an increase in smoking and alcohol consumption, the liver lost its vitality and vigor. The Red Blood Cells are unable to rest, and the calves are in a weak state, they decide to deliver oxygen to a deep vein that is oxygen deprived. - Calamity, Athlete’s Foot, and the Meaning of WorkE9
Calamity, Athlete’s Foot, and the Meaning of WorkWhite Blood Cells are nowhere to be seen, and White Blood Cell (1196) is alarmed by this abnormal situation. Red Blood Cell (AA2153) is worried about the deteriorating health of the body but continues to deliver oxygen. He happens to see newly recruited Red Blood Cells undergoing training. Since Red Blood Cell (AA2153) has been recognized for his recent achievements, he is chosen to train the new recruits and is asked to deliver oxygen with them. However, Red Blood Cell (AA2153) pushes himself too hard without rest while trying to set a good example for the new recruits, and… - Stomach Ulcer, Friendship, and LossE10
Stomach Ulcer, Friendship, and LossRed Blood Cells are summoned to handle an emergency. They carry oxygen to the scene, but they discover that the stomach has an ulcer and is badly breached. If the Serous membrane becomes perforated, the stomach will end up melting down. - Desperation, Gout, and RebellionE11
Desperation, Gout, and RebellionRed Blood Cell (AA2153) repeatedly sees flashbacks of his fellow Red Blood Cell (AC1677) falling into a sea of gastric acid and beats himself up for not being able to save his friend. However, this body does not have the wherewithal to let Red Blood Cell recover. While lack of sleep and exercise is pushing the body into a state of disarray, a sharp and huge inanimate object is found floating midair. An attack from a mysterious germ begins…