The second season of Hataraku Saibou. 
 
Cells at Work!! continues the tale of…well…you! Set inside the human body, Cells at Work!! chronicles the life and times of everything from the oxygen-carrying Red Blood Cells to the bacteria-fighting White Blood Cells. And, of course, the dangerous viruses and villains lurking beneath the skin! 
 
(Source: Funimation) 
 
Notes: 
- The episodes were streamed two days ahead of the Japanese broadcast on Funimation beginning on Jan 8, 2021 at 2:00 JST. The regular TV broadcast started on Jan 9, 2021 at 23:30 JST. 
- The pre-screened movie "Hataraku Saibou!!" Saikyou no Teki, Futatabi. Karada no Naka wa "Chou" Oosawagi! is included as episodes 4-8 split into the broadcast.

From Akane Shimizu, winner of Shounen Sirius' Rookie Award, comes an informative tale about anthropomorthized cells!
 
Strep throat! Hay fever! Influenza! The world is a dangerous place for a red blood cell just trying to get her deliveries finished. Fortunately, she’s not alone … She’s got a whole human body’s worth of cells ready to help out! The mysterious white blood cell, the buff and brash killer T cell, the nerdy neuron, even the cute little platelets—everyone’s got to come together if they want to keep you healthy!
 
(Source: Kodansha Comics & MangaUpdates)
 
Note: Contains the spin-off one-shot "Hataraku Saibou: Kansen-hen".

A short animation about Platelets at a movie theater that released with the screening of "Hataraku Saibou!! Saikyou no Teki, Futatabi. Karada no Naka wa "Chou" Oosawagi!." Later released on the movies Blu-ray.

Sotohane-chan