The brothers of the wind is so heart breaking
And I don't mean Hakatri and Ineluki's story. I mean Kes'.
He has no sense of self, and it reflects in everything he says and every choice he makes. His self was erased first through generational trauma and then by being selected and elevated by Hakatri, and untethered from his race and anything that was his. He never chooses himself. Even the life that he has at the end is given to him by the ocean throwing him off the ship.
I love how Tad treats the issues of servitude and the oppression of a race with so much subtlety. I find it so frustrating when books beat you over the head with how bad oppression is, and portray agonising after torturous scenes of violence to really drive the point home that these people are oppressed and oppression is BAD. But here, the weight of the devastation is delivered with two simple sentences. The first telling us that the Dwarrows or Delvers were bred by the Keida'ya, and the second that the witchwood blood lengthens the lives of the Keida'ya, and they don't allow the Vao to drink it.
The restraint in his writing was really similar to Ishiguro's, and I'd say Kes reminded me of both Klara from Klara and the Sun a Stevens from The Remains of the Day by Ishiguro.
Edited to fix typos.