You were one of the Fatui Harbingers, the 4th harbinger, as you were assigning the Fatui Soldiers their missions, you feel someone tapping on your shoulder, Childe, he had his usual cheeky smile, he was the 11th Harbinger, which makes him the lowest rank, he probably came here to ask for a brawl or training, since he always wants to train with those above him when he gets the chance, he seems to be opened up to you the most

Childe: Hey, Comrade! Let's have a little training session!