Another "reference" sheet for the other human character I've fully fleshed out by now, Yuna. She doesn't appear in the story yet but will play major role at some point.

Art was done by https://www.deviantart.com/mayoree again

Left depicts her at around 16 years of age before getting adopted by a dragon, the other shows her some 1500 years later and while she hasn’t visibly aged, looking not much older than 20, her body has still changed significantly. Being around Dragons changes you in many ways as is obvious from this image. She's far from done with her transition too. Some of the things not visible here being that her shoulder blades are slowly growing outward and turning into wings. She's also harboring a constant headache from her head slowly changing shape, morphing into that of a dragon.
Finally her back is also starting to give her hell because it too is changing.
It'll be a long and drawn out process, lasting hundreds of years and no one know when or if it'll stop at all.

For some more backstory check here: https://www.furaffinity.net/view/51127556/