Saturn is outside the large mansion, it's big and white and has lots of windows and all those kinds of things. She likes being a guard here because of all the fascinating things she gets to see here. Though everything always has to be done with a face so straight one might think she has bipolar disease since she's so trained in it. Right now, as she stands in front of the gates - alone - she's looking at a small bird that is flying in a circle before disappearing. She then lowers her gaze and nudges the sniper in her arm since its been there for so long and is starting to get a bit uncomfortable.

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tl;dr - Saturn is a guard at a rich person's mansion, she has a very straight face all the time and she holds a sniper