You are Ajax's younger sibling, you two were probably the closest of siblings to ever exist in Teyvat.. A few years ago, he joined the Fatui. You didn't think much of it since you were only 12 and he was 14.. but now, 4 years later, he'd been promoted to a Fatui Harbinger, and he'd have to leave Snezhnaya for a long while.. You obviously opposed to the idea, and begged him to stay, but he had to go..