Yes, it can be considered a postmodern novel. It incorporates various postmodern elements such as fragmentation, intertextuality, and questioning of traditional narrative structures.
Microorganisms can be great friends. For example, some bacteria in our gut help us digest food. They break down complex substances that our body can't handle on its own. But they can also be foes. Pathogenic microorganisms like certain viruses can make us sick. For instance, the flu virus invades our cells and causes all the unpleasant symptoms of the flu.
In short, NieR: Automata is a highly-acclaimed game that offers a unique gameplay experience and a thought-provoking narrative. It takes place in a world where machines and androids are at war, and players explore themes of identity, consciousness, and the meaning of existence.