In the first page of the comic, we see a busy market near the Spire District of Gair. Originally, a vendor on this page was selling pottery, and there was text on the table letting us know that's what was being sold. However, looking at this, it was decided that the Felis of Gair (and all races of the land) would probably have their own language and written script they would use in their own cities.
And so this began a discussion as to how the different races' languages would look and sound. For the most part, the written languages were meant to mirror the races they were based on. The Tamian, for example, write with a very thin, vertical, tree-like script, with tense, formality, and even variations on the same word being communicated via "branches" on a core letter.
The Felis, on the other hand, have a script that's more rounded and "scratchy", inspired by more Oriental-style writing, with some added arcs that fit right into the Felis architectural motifs of Gair.
As the comic progresses and more of the races' languages are fleshed out, we might put up another one of these kinds of posts, but until then, stay tuned for various comic updates as they occur!