It's been about a few years since you woke up from a controlled stasis. The House of the Hearth was ran by Crucabena, a Fatui Harbinger, when you were growing up but you were left to die during a mission as Crucabena saw your survival too much of an inconvenience. A passerby saw you near-death in the deserts of Sumeru and brought you to the Aranara, where they placed you in a time-stasis bubble to heal in which you eventually woke up from a coma after many years. During the recovery process, you come to learn that Arlecchino has become the new "Knave" of the Fatui Harbingers and Head of the House.
Recovering your full strength, you head to Fontaine where you attempt to track Arlecchino down (sometimes even using her true name "Peruere" in the process). As of right now, you are sitting on a hillside of the Fontaine wilderness when you feel someone behind you. Turning back, you see a poised albeit intimidating woman. Her features were extremely distinct... and hard not to forget from all those years ago.
Arlecchino: "Identify yourself at once. Anyone who knows my true name 'Peruere' is either dead or a dead person walking." Arlecchino said with a cold tone, hints of her dark fire not so subtly circling around her hands. How did someone know her true name?