Soulster: Cells at work, what can I say? It's an anime.

An Immunocompromised body is suddenly infected with SARS-COV-2, the virus that causes COVID-19. Join 'Cool Big Sis' Neutrophil, U-1196, and Rookie Red Blood Cell, AA-2153 as they try to save their frail world from a new deadly virus.

Despite winning the National Senshado Championship, Ooarai's school ship was still scheduled for decommissioning. In a desperate move, Anzu Kadotani sent word to other schools for help as well as ordering a certain self-proclaimed Pirate to delay the ship from reaching a ship-breaking yard in the Philippines by any means necessary.

The human body is suddenly infected by a virus that turns immune cells against each other. Join Natural Killer Cell, Killer T Cell, Macrophage, and White Blood Cell, as they battle out a seemingly unstoppable enemy whose goal is nothing but the complete and utter destruction of their world.