CELLS AT WORK! CODE BLACK

Inside 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 st...

AA2153 starts his first day of work and is overwhelmed by the state of the body he works in.

While on delivery, AA2153 runs into a beautiful yet bloody-stained-clothed Macrophage and her appearance scares him.

There 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 ...

The Red Blood Cells have been given an important mission to fill the corpora cavernosa with blood to trigger an erection. Red Blood Cell (AA2153) is enthusiastic about the opportunity to contribute to the birth of new life, but as usual, things never go as planned in this body. He is hazed by senior Red Blood Cells, and the body suffers from erectile dysfunction due to stress. With a multitud...

An announcement gets broadcasted. AA2153 and his coworkers are summoned to the male reproductive organ, Corpora-Cavernosa.

Gonococci have entered the body through sexual intercourse. The White Blood Cells are forced to fight an uphill battle with the gonococci who are known for their unbelievable proliferation rate. The gonococci have invaded the areas surrounding the urethra and are closing in on the epididymis where the sperm are. In order to stop any further advancement of the gonococci, White Blood Cells wage...

Everyone is warned of the danger heading their way so AA2153 comforts the terrified Platelet Division.

One of AA2153 deliveries sends the rookie to the Hair Matrix Cells and he bumps into U-1196 exercising despite her injuries.

Red 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 a...

Red Blood Cells AA2153 and AC1677 are getting accustomed to their jobs and even have enough energy to joke around during their downtime. They head to the kidneys to wash away the dirt accumulated on the job, where they meet the Glomeruli who work silently to filter the blood. A young Glomerulus warns Red Blood Cell to be careful when getting close to the ureter. When the Red Blood Cells arriv...

AA2153 and AC1677 find themselves in the way of a huge kidney stone.

An accident occurs where the oxygen delivered by Red Blood Cell (AC1677) to a young Ordinary Cell transforms into reactive oxygen, causing the Ordinary Cell to age. Though it was an accident, he is overcome by guilt for making a cell grow old. Shortly after, an awards ceremony is held for new Red Blood Cells, where AA2153 is chosen for the Rookie of the Year award. Though they started on the ...

AC1677 feels inferior when AA2153 wins the Top Rookie award and grows resentful towards him.

While doing their deliveries, AA2153 and AC1677 meet a senior red blood and they decided to go to the liver to have a good time.

Due to an increase in smoking and alcohol consumption, the liver has lost the vitality and vigor it once had. It is apparent that the Liver Cells are unhealthy, and according to these cells, too much fat has built up in the liver which has caused the functions of this organ to deteriorate. While Red Blood Cell (AA2153) is bewildered by this situation, he is asked by other Red Blood Cells to h...

White 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...

AA2153 mentors some rookie red blood cells and is compelled to work harder for the sake of his juniors without taking a break.

Red Blood Cells are summoned to handle an emergency. They carry as much oxygen as they can to the scene, but they discover that the stomach has an ulcer and is badly breached. If the serosa becomes perforated, the stomach will end up melting down. Due to the excessive secretion of gastric acid, the body may die at any moment, but the Red Blood Cells continue to desperately carry oxygen. Howev...

Gastric Chief Cell declares that the stomach is suffering from an ulcer that has formed a big hole.

Red 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 ...

A huge crystal appears in the big toe. Thinking that it is germ, U-1196 and her team are sent to battle it.

Still unable to find meaning in his work, Red Blood Cell (AA2153) is determined to continue delivering oxygen and works hard at his job. Contrary to his determination, the body's internal environment continues to decline. Plaque, which is made up of cholesterol and fat deposits, has accumulated on the inner walls of the blood vessels, causing them to deteriorate. The buildup of plaque has eve...

AA2153 finally returns to work. As he passes by the stomach, he recalls the traumatic memories.

Body functions are shutting down. While all the cells have given up in this hopeless situation, only AA2153 still perseveres.