Vivian, one of the many characters that you’ll meet in the game, had a unique backstory in the original Japanese release that was entirely absent from the English translation. Fortunately, in the Nintendo Switch remake, Vivian is now confirmed to be a transgender woman, even in the localization. While it’s not stated outright, it’s very directly implied when she says things like “it took me a while to realize I was their sister…not their brother” when referring to her siblings. She later goes on to say “Mario is the only person who’s ever been kind to me,” and though it doesn’t get much deeper than that, having a game set in the Mario universe that isn’t afraid to dabble with more serious subjects is part of what makes The Thousand-Year Door so special.