Well, Los Angeles is the setting of 'Pulp Fiction'. It gives the story a specific backdrop. The city's diverse and sometimes seedy elements contribute to the overall noir - like atmosphere of the movie. For example, the different locations in LA, like the diner and the seedy motels, play important roles in the various storylines.
I'm not entirely sure, but it's very likely. TvTropes is a comprehensive database for all kinds of fictional works. Given Konosuba's popularity, especially in the anime and light novel world, it would make sense for there to be a section about its visual novel on TvTropes. You could check by searching for 'Konosuba visual novel' on the TvTropes website.