Eu acho que entendi. É isso Crônica do Trono Não Caído série por Brian Staveley?
TLDR; versão
- Três irmãos; Kaden, Valyn e sua irmã Adare.
- O pai deles, o Imperador, foi assassinado.
- Kaden vive em um mosteiro com monges do deus em branco.
- Valyn treina com uma unidade de tropas de elite (The Kettral), que usa falcões negros como montarias. Sua sede está localizada nas Ilhas Qirin.
- Adare vive na capital.
- A Casa Imperial reivindica descendência da deusa Intarra e cita essa herança como a razão de seus olhos ardentes. Embora todos os imperadores tenham esses olhos, nem todos os principados os têm. Kaden é herdeiro do trono por possuir esses olhos, apesar de ser mais jovem que Valyn.
- Quatro livros da série; As Lâminas do Imperador (2014) A Providência do Fogo (2015) O último vínculo mortal (2016). Quarto, Skullsworn foi publicado 2017 e é disponível na Amazon (Grite para Eshier por apontar isso).
- Há uma ordem de cortesãs chamada leina.
Versão longa
Isso é o que Goodreads.com diz sobre As Lâminas do Imperador (Livro 1 da série):
The Emperor has been murdered, leaving the Annurian Empire in turmoil. Now his progeny must bury their grief and prepare to unmask a
conspiracy.
His son Valyn, training for the empire’s deadliest fighting force, hears the news an ocean away. He expected a challenge, but after
several ‘accidents’ and a dying soldier’s warning, he realizes his
life is also in danger. Yet before Valyn can take action, he must
survive the mercenaries’ brutal final initiation.
Meanwhile, the Emperor’s daughter, Minister Adare, hunts her father’s murderer in the capital itself. Court politics can be
fatal, but she needs justice.
And Kaden, heir to an empire, studies in a remote monastery. Here,
the Blank God’s disciples teach their harsh ways – which Kaden must master to unlock their ancient powers. When an imperial
delegation arrives, he’s learnt enough to perceive evil intent. But
will this keep him alive, as long-hidden powers make their move?
Quanto aos olhos:
"Valyn [is older], by one year. It's a really common mistake. Kaden is
heir to the throne for his eyes, not his age."
Também o Página do editor confirma a existência de aves usadas pelas tropas de elite:
In The Emperor's Blades by Brian Staveley, the emperor of Annur is
dead, slain by enemies unknown. His daughter and two sons,
scattered across the world, do what they must to stay alive and unmask
the assassins. But each of them also has a life-path on which their
father set them, destinies entangled with both ancient enemies and
inscrutable gods.
Kaden, the heir to the Unhewn Throne, has spent eight years sequestered in a remote mountain monastery, learning the enigmatic
discipline of monks devoted to the Blank God. Their rituals hold
the key to an ancient power he must master before it's too late.
An ocean away, Valyn endures the brutal training of the Kettral,
elite soldiers who fly into battle on gigantic black hawks. But
before he can set out to save Kaden, Valyn must survive one horrific
final test.
At the heart of the empire, Minister Adare, elevated to her station
by one of the emperor's final acts, is determined to prove herself to
her people. But Adare also believes she knows who murdered her
father, and she will stop at nothing—and risk everything—to see that
justice is meted out.