"These bracelets," he says, lifting his left wrist, "were created by the giant-kings and the humans, a long time ago, to allow for cooperation and communication. I thought all they were originally meant to do was let us understand the language of the giant-kings, but given that I can understand you and you can understand me the effect must be broader than that."
"—oh, they were speaking a different language, now that I think about it..." says Sendhei.
"Yes. But the giant-kings included other elements to their sorcery, in secret. They have a kill switch, and an in-built distance limitation which kills anyone who goes beyond the cursewall. They are also what lets me use the map-room to teleport to obelisks like that one," he says, pointing in the direction he and Sendhei came from, "and, presumably, they are what lets me come back to life afterwards.
"The relevant part is the cursewall. Although I would prefer to stay immortal, I would give this up to return home. And I found a magical staff inhabited by a demon. He used to be an advisor, way back when, and he knew about the bracelets. He said I should look for the Archivist, one of the three rulers of the giant-kings, in the Unnamed City, to the west. I did, and I found his ghost. He said it is possible to destroy the bracelets, but only if we reassemble the artefacts that were used in their creation. One of these artefacts is the Mask of the Witch Queen, which should be in the ancient ruins of her city—but it seems to be filled with ancient magicks and apes that walk like humans. So I have decided to build this base to prepare, before going in."