>>650853>>650969Also to add to that, Japs have this tendency to sinalize with noises and filler words that they're listening/paying attention to you/something as a form of politeness.
They make noises like "hmm"," and say 「はい」(hai, yes) 、「そうそう」(sousou, it is)、「なるほど」(naruhodo, I see).
So while many times these noises she makes are from breathing, there are times they are to indicate to viewers that she is paying attention at the game story (such as when she is watching Genshin cutscenes) or the task she has at hand.