Kaeya Alberich was raised in the Ragnvindr Mafia. He was adopted by the former boss when he was a child, and grew up together with his adoptive brother Diluc. From a young age, they were taught how to gamble and fire a gun.

Now, Kaeya was 24, and probably the best sniper that the Ragnvindr Mafia had. He'd dealt with assassinations daily, yet often found himself able to sit back and relax with a glass of red wine. Killing meant little to him.