This universe has a civilization of humans! And some other things. It's not crowded in the way Edda is but it's not just the one planet either. The humans might be easiest to start with. They're on that planet over there, it's not Earth but it has very Earthlike conditions and bronze-age humans living in cities and villages dotted across two large continents. Depending on how thoroughly any prospective visitors look they might find other things before visiting.
After a few quick demos-
"Mmmh. I am a brave and honest man, and that is much of why my people follow me. Your visit unnerves and frightens me. For all that you paint your arrival as a joyous thing, it feels as though the soil is about to be washed away beneath my feet and everything will change and be new and weird. You can defeat chaos utterly, should it rear its head, and that will please the common folk. Great magic and artifice will excite the craftsmen. Great learning will excite the scholars and priests. I don't hold with the whole star lords bit as much as most people do, and you've said you're probably not those anyway, but I think if you asked all my people to join the magic empire from beyond space they would throw a gigantic feast and agree almost to a one in a great frenzy. I have some concerns there. I don't think that would be particularly good, to do it like that, when nobody understands what Vanda Nossëo is and is fitting you to half-formed expectations out of myth and legend. For example, I notice you have not launched a great crusade to crush the beasts of chaos once and for all."
"Yes, the dragons are the greatest agents of chaos, ever hostile to all the people of the world, and the dragons' changed-beast puppets as well. Though there are also spirits - beings of magic and not flesh who roam and rage as they please and cannot be destroyed by our hands. Fey tricksters and other strange things here and there as well, though not in Goldvalley as far as I am aware."
"We'd definitely need to learn more about the dragons before making any specific commitments regarding them," says Nelen. "But your other concerns aren't misplaced - cultures change a lot when exposed to Vanda Nossëo. It would be completely reasonable to want to proceed slowly and learn more about us and the peoples constituting us before making a decision on membership."
Natsuko gets up and trots after the minister.
"We aren't structured with a king at the top," says Nelen, "though some people choose to involve themselves while also separately being kings of some part of Vanda Nossëo. We do have a code of laws, though, would you like to read the whole thing or is there something in particular you're curious about?"
"I suppose I should read it over and give you ours as well, just to get a better handle on each other. A summary first perhaps?"
"How should I address you?" Ferron asks Natsuko once they're out of the room. "My king wants healing for the people and for you to operate as freely as any merchant here would. What accommodations do you require in return?"
"My name is Tanaka Natsuko, and if you want to be polite it's Tanaka-san but if you prefer more casual address Natsuko is fine. I can create a new building in a few seconds for us to set up shop in, and then someone will teleport down a starting stock of things we think people might want around here, which we'll trade for personal anecdotes or stories or songs."
"Tanaka-san, thank you for clarifying. I am Minister Ferron or Sir Ferron. ...How strange. If you wish to be paid in stories that is not our business. I think you had best demonstrate to me or the Guard that your products are safe first, and make sure to warn people about those that aren't. We do punish merchants who sell bad goods. Perhaps not a spot in the market square if you intend to... Raise a new building. With magic I presume?"
"Well the first is just this way, not far from here. The usual way we tax merchants won't work, we charge an import duty by the wheel and leg, but I'm honestly not worried you all will shortchange us when it comes time to figure that out. Instead let me ask, many of the sick and injured aren't well enough to push through an excited crowd for their healing, either, would your healers be willing to make visits?"
"I think we can handle that. The guard or the priests or the scribes... The scribes. They tally the sick and cripples as part of making sure we have plenty of food, so even if they don't already have a list they know how to go about it."
They arrive at a large open square, rough and uneven stone with a few stalls and wagons set up in rows along one side. "Well, here's the square, and there is your spot just there, see that empty space?" It's a house-sized gap in the rough stone and wood construction, with wild grass and bushes growing in it.