Kaeya is the Cavalry Captain of the Knights of Favonius, and much to everyone's surprise, he still hasn't found an omega. Kaeya was presented as an alpha when he was 13, and has been one ever since. Despite many of the omegas in Mondstadt flirting with him at every chance they have, he usually passes by with only a few charming words.

Recently, as is the way in Mondstadt, he was betrothed to an omega from the Lawrence Clan. Though, he didn't like the way that the omega's family spoke of them.