So here's the interesting thing: I've done research on the invention of hockey. Like, the creation of hockey-like sports. And while we look at soccer as "the world's game", there's one team sport that every single civilization seems to create: hockey. Like, if you live near ice that freezes, at some point someone's gonna decide to start skating around and hitting things with sticks. So I don't think it'd be too difficult to explain the concept of hockey to an isekai world. And depending on the isekai sub-genre, it might not be that hard. Like, have you read that sort of isekai where some guy gets transported from Japan and he makes food and literally everyone creams their pants because "obviously my Earth cooking is superior"? It's so dumb. So, I'm not sure Wisconsin would be into this, as she seems like a fairly apathetic character who would just sorta become a warrior (maybe using her hockey stick as a weapon). But if I'm in this isekai, I'm starting a hockey team/harem to destroy enemies. Build like a Fortress of Solitude in a wintery area where the only way to get to me is to win a game of hockey against the harem- oh God, I'm the villain.