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The Xaela emigrated in 3 migratory waves over the course of a decade or so, if I remember correctly, but in numbers only recently, when the Raen coming from Doma also fled the destruction of their city by Garlemald, not even one year ago.
It is definitely possible for an Au'ra to have emigrated way sooner though, even a Raen. It just implies a hetfy dose of "what the fuck are you" from Eorzeans. They probably would have created a lot of waves and attracted attention everywhere they went, unless they tried to hide their appearance (like Yugiri did more recently when she arrived in Eorzea).
As for the question, yes, blood relations are possible between different races, or at least as far as we know, between Elezen and Hyur, at least on a single generation. So, adoption is of course possible too. We actually have several examples in the lore, like Minfillia's adopted mother, F'laminn, who is a Miqo'te Seeker of the Sun.Â
We also know that while eorzeans aren't especially homophobic or what you have, and prove to be a rather open/liberal society, they can be rather racism and xenophobic though. People keep to their own, and other races are most of the time seen with distrust or even disdain/disgust depending on the place you live in. For example, Keepers of the Moon in Gridania are seen as poaching savages by snazzy Wildwoods, etc. Relations with someone from another race is often seen as deviancy or perversion. Not by everyone of course, mind you, but it tends to be the general shunning such people are subject to.
The MSQ seemed to portray a lot more inter racial help and support on the side of Yugiri and her doman refugees (au'ra and hyur), for whom racial concerns are probably the least of their worries.
It is definitely possible for an Au'ra to have emigrated way sooner though, even a Raen. It just implies a hetfy dose of "what the fuck are you" from Eorzeans. They probably would have created a lot of waves and attracted attention everywhere they went, unless they tried to hide their appearance (like Yugiri did more recently when she arrived in Eorzea).
As for the question, yes, blood relations are possible between different races, or at least as far as we know, between Elezen and Hyur, at least on a single generation. So, adoption is of course possible too. We actually have several examples in the lore, like Minfillia's adopted mother, F'laminn, who is a Miqo'te Seeker of the Sun.Â
We also know that while eorzeans aren't especially homophobic or what you have, and prove to be a rather open/liberal society, they can be rather racism and xenophobic though. People keep to their own, and other races are most of the time seen with distrust or even disdain/disgust depending on the place you live in. For example, Keepers of the Moon in Gridania are seen as poaching savages by snazzy Wildwoods, etc. Relations with someone from another race is often seen as deviancy or perversion. Not by everyone of course, mind you, but it tends to be the general shunning such people are subject to.
The MSQ seemed to portray a lot more inter racial help and support on the side of Yugiri and her doman refugees (au'ra and hyur), for whom racial concerns are probably the least of their worries.
Balmung:Â Suen Shyu