--- Thmyl Lbt Draghwn Bwl Zd Kakarwt Llandrwyd Apk -

And Thmyl laughed, walking home as the first true stars appeared above the valley.

Thmyl scratched his beard. "That’s nonsense. Even for you." --- thmyl lbt draghwn bwl zd kakarwt llandrwyd Apk

So Thmyl knelt, slid the apk into a slot hidden under ash and moss, and the dragon’s gears groaned back to life. The mist lifted. Llandrwyd became real again. And Thmyl laughed, walking home as the first

If I interpret it as (A↔Z, B↔Y, etc.), here’s what it decodes to: And Thmyl laughed

In the deep glens of Llandrwyd, where the mist never fully lifted, an old wizard named Thmyl lived alone in a tower carved from a single obsidian stalagmite. His only companion was a bumble-tongued raven called Kakarwt.