There's actually quite a bit in-game for Raen examples. The three Raen that are introduced in the story are from ninja clans and/or high ranking members of society in Doma. The 50-60 ninja quests give a lot for Raen...Xaela are the ones lacking in my opinion. In general, the Raen are not trusting of Shinobi as their land was was betrayed to Garleans by Gekkai (and Karasu kinda). Not all Raen have left Doma as the princess and her servant who came to Eorzea for the 50-60 ninja quest were searching for stollen relics and were going to go back.Â
For in-game examples (which is how I learn best) I suggest going through that questline. The ninjas teach you A LOT about Doma.
For in-game examples (which is how I learn best) I suggest going through that questline. The ninjas teach you A LOT about Doma.