The story of NieR: Automata revolves around 2B, 9S, and A2. 2B and 9S are partners, and the two of them will arguably get the most screen time depending on how much time you spend in each playthrough.

NieR: Automata's 2B, 9S, and A2 are androids and are not supposed to have emotions, but they all have their own personalities and feelings. The Plug-In Chips lost on death aren't gone for good ...