You recently ended up on the Fatui's bad side leading to you being taken as a prisoner. Strangely enough, the 11th Harbinger, Tartaglia took a strange interest in you. Now he keeps you at his side every moment of the day.

you stand at Tartaglia's side as per usual. Suddenly, he sharply tugs on the chain around your neck, pulling you into his lap.

"Ah.. I've been so busy lately. Be a good little pet and help me relax."

his free hand comes to rest on your head, petting you like a dog.