I see some potential here. The origin is, honestly, pretty cool. However, I'm already wondering if it's something that we need to know right off the bat, or if we'll ever need to know it at all. Isekai's so often completely forget that the MC came from another world and usually fail to make use of that fact. In other words, there's no point in an origin story if you aren't going to use it.
Like the first comment said, there's too much info in the first chapter. Unfolding your story slowly is better for the reader (we're here for comics, not books), and for you. It gives you opportunities down the road for arcs, tie-ins, twists, and other things. If you throw down too much lore early, you'll limit your options and bore your readers. It also takes away from appreciation of your art when half a panel is covered with text bubbles.
I also agree that it's best to avoid made-up languages. If your characters are supposed to be understood, stick with English. If you don't want them to be understood, or want to make it clear that they're speaking a language different from the comic's standard, then use a different language. Sousei no Taiga does a fantastic job of using languages creatively. Check it out if you haven't.
I really like the art. Gives me a Boichi vibe, and he's my favorite artist ever. I would tone down the size of the eyes a bit, though. Keep it coming. I look forward to the next chapter.