Parent story: Cells at Work!
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…
Alternative Titles: Hataraku Saibou Black (TV), Cells at Work! CODE BLACK!, はたらく細胞BLACK