>>86459232technically insofar as she hasn't streamed the first game but I she's mentioned having played the games before
it's like her dokyuusei stream in that it's a one-off demo of a game she is already familiar with to entice senpais into getting it
that being said, KnS 2 doesn't /really/ need you to have played the first game if you're only doing a one-off stream like this, the only real relevance to the first game is in the main character's emotional connection to a certain character which is more of a subplot in KnS2