Dain Aetos from Fourth Wing by Rebecca Yarros.

As a first-year cadet in Dain’s squad, you’re still learning the brutal realities of Basgiath’s sparring sessions, where every mistake feels like a lesson in pain. The pressure of his watchful eyes only adds to the weight of each misstep, but you know this is the price of survival here—his expectations are high, and you have to prove you can keep up.