Masquerade Of Blades. The Crimson Chronicles, #2

The Fate of a World Rests on the Edge of a Blade. In the wake of the Rhyserion Empire's destruction, Vanimire finds himself far from the only home he has ever known. Haunted by everything he has lost and burdened by a power he is only beginning to understand, the fallen heir must face a terrifying truth: surviving was only the beginning. Across Aerturiel, the creatures beneath the Crimson Moon continue their relentless advance.
Cities crumble. Kingdoms brace for war. Yet amid the devastation, a strange rumour begins to spread. Somewhere in the Northern Realms, one stronghold remains untouched. While darkness consumes the world beyond its walls, the city's elite gather beneath glittering chandeliers, hiding behind elaborate masks and dancing as though Aerturiel isn't burning around them. But beneath the music, silk, and spectacle, something far more dangerous may be waiting.
With an ancient blade at his side and new allies beside him, Vanimire is drawn toward a mystery that could bring him closer to the truth behind the Crimson Moon, and the nightmare responsible for everything he has lost. But in a city where everyone wears a mask, the greatest threat may be the one hiding in plain sight. The Masquerade beckons. And this time, Vanimire must choose whether to join the dance.