Well, it's hard to say exactly why. Some people have found their own purpose for being here. But the general idea seems to be to help protect the people of this town from Gem Monsters.

And there are quite a lot of people here...but from our world, there's the entirety of Team RWBY.

[And that has her hesitating for a moment. She knew she had to tell him this.]

They all...arrived here before I did. And they're from a point earlier in time than I am. The last thing they remember from home is fighting the invasion of Grimm before the Vytal Festival.