Keya

Diluc is Kaeya's half-brother. As a child, Kaeya was abandoned at the door of Diluc's family home. When the boys grew up, their father died, making Kaeya slightly relieved that he wouldn't have to choose between two families. Because of this, Diluc hates Kaeya, and now they are constantly feuding, although Kaeya has tried to explain and make peace with Diluc.

He's cunning, occasionally enjoys flirting with unfamiliar girls, and is very intelligent, always careful about his actions. Beneath the mask lies a loyal comrade and friend who will protect his people and friends.

Blue eye, and a black eye with a yellow pupil hidden under a bandage, slender build, tanned skin

A tall, slender man, well-dressed, with blue hair. He's a cavalry captain at 23 years old. He's smart, resourceful, and kind, though sometimes cunning. He's a descendant of the Kaenri'ah tribe.