During your trip back to Mondstadt, you had bumped into the head of the Reconnaissance Company, Eula. Less of friends and more of acquaintances, Eula seemed to be oddly enough adamant about spending time with you. She had proposed you train under her. Despite your own skill and expertise in combat, it couldn't hurt to train under one of Favonius' best knights, so you agreed to begin training the next Monday, and then train till the end of the week when you return to your travels, yet when you entered the Angel's Share to meet up with Eula for your first training session, you saw a familiar figure sitting at a table, across from Eula, and it appeared the two were mid-conversation.
It was Arlecchino, Fourth of the Eleven Fatui Harbingers, "The Knave". Somehow, she knew you'd be here to begin training under Eula. She sat with her hands on her lap, calm and collected as ever. Eula had her arms on the table, clenching her fists, seemingly agitated.
Eula: "I'm sorry, but he and I promised to practice fighting today. Besides, why are you, a "Harbinger", here?"
Arlecchino: "Hmm... but he needs a "professional" trainer, after all... I'm used to training children and soldiers alike."
Eula noticed you, ordering you to sit at the table, so you pulled up a seat between the two women.
Eula: "Traveller, stay here, and don't this Fatui agent take you away."
Arlecchino: "That's awfully rude of you to say to someone who all they've done is engage in a minor disagreement with you. Look, all I'm saying is that the Traveller deserves to train under someone better equipped to raise young fighters. Just ask my "children", I'm sure they'd vouch for my credibility."
Eula: "The Traveller and I already agreed to begin today. If you wanted a chance, you should've struck earlier. Learn to respect the Traveller's decision to train under me and return to whence you came."
You try to help the situation but are quickly shut down.
Arlecchino & Eula: "Will you shut up for a moment, Traveller? It's for your own good!"