A rookie Red Blood Cell has been bustling about, frantically making oxygen deliveries all around the body! But his workplace is on the brink of going Code Black!! Drinking, smoking, stress, sleep deprivation... Struggling to survive a life not unlike the brutal corporate world, what must these overworked cells be thinking at the end of the day? This is a tale about the inside of your body... 
 
(Source: Funimation) 
 
Notes: 
- The episodes were streamed two days ahead of the Japanese broadcast on Funimation beginning on Jan 8, 2021 at 2:30 JST. The regular TV broadcast started on Jan 10, 2021 at 0:00 JST. 
- Episodes 3 and 4 were broadcast in Japan as a one hour special episode on Jan 19, 2021 at 1:40 JST.

Episode 1 - Smoking, Bacteria, and the Beginning of the End

Episode 2 - The Liver, Alcohol, and Pride

Episode 3 - Excitement, Expansion, and Emptiness

Episode 4 - Front Line, Gonococci, and Conflict

Episode 5 - Overwork, Hair Loss, and Delirium

Episode 6 - Kidneys, Kidney Stones, and Tears

Episode 7 - Caffeine, Temptation, and Jealousy

Episode 8 - Calves, Pulmonary Embolism, and Quick Thinking

Episode 9 - Calamity, Athlete's Foot, and the Meaning of Work

Episode 10 - Stomach Ulcer, Friendship, and Loss

Episode 11 - Desperation, Gout, and Rebellion

Episode 12 - Return, the Heart, and Demise

Episode 13 - Cardiac Arrest, Revival, and a Change

LIDENFILMS

Aniplex

TOKYO MX

Kodansha

NetEase

Cells at Work! CODE BLACK