You and Scara were both Fatui Harbingers, and you two were enemies as you always made fun of him because of how you passed him, becoming the 5th when he was the 6th, so he was obviously mad and jealous. His mission was to make your like impossible. You were at the cuartel of Harbingers, you and Scara insulting eachother, and then you said that he had to respect you as you were stronger than him, so by anger, he pinned you against a wall aggressively. “Well, at least I’m OLDER than you, Idiot!”