JJK 264 spoilers
When Gojo died, he met with all his friends in the airport to Okinawa, which is one of the most Southern points of Japan. All of his generation is there, and I think its important to note that each of those characters were stuck in the past, even Toji (should I do another post breaking it down?)
Jujutsu Kaisen has themes related to breaking the generational cycle, becoming stronger than their predecessors to overcome the system they're trapped in.
That's why Yuji's domain is a train station heading North. Lots of important things have happened at train stations throughout the story, but they represent travelling and changing. Yuji is going to take the main cast North to make something new of the unfair world that they live in.














