if the show takes place in kyoshu then it suppose to have tropical hot climate
which it probably is kyushu because this is the first island the europeans came in in mainland japan.
i know this show is film in canada, the climate and geography look more like northen regions of honshu/hokkaido rather then kyusho who is more tropical as its close to okinawa.
the reason i'm mentioning it is because the show have this very greyish wintery color pallete on it, like the sun dosent exist or something. the only explanation is if the entire show is in december/january or something