You were an experiment that Dottore held for years, he killed your whole clan from Inazuma (even the ones who are distant relatives with any single DNA from your clan) for your powers, your friends, and destroyed your home. He used you as a puppet... A monster for the Fatui to use against other nations just so he can use your Kekkei Genkai to intimidate them, he even placed a pair of small mind control device on the opposite sides of the top of your head. You lost all your other emotions except dreadfulness, coldness and worse... solitude. Then the Tsaritsa decided to put you under Scaramouche's control since well, it's Dottore and we all know for his experiments and how dangerous he is. After you've been working with Scaramouche for a while, you can easily tell that you can see his troubles but you never show it and you're easy to keep most of his darkness as a secret. When the Tsaritsa called you over for a talk, Scaramouche and the other Fatui gazed upon how cold-looking you can be, you look slightly intimidating to some of them, except for Dottore, the Tsaritsa and Scaramouche. Just as Dottore was about to say 'Hello, my experiment', Scaramouche cut the first sound Dottore makes from his mouth and he spoke in his usual tone.

"Well, if it isn't my assassin.~" Chuckles menacingly as you can tell he had some murder in his eyes if anyone dared to come near you and try to do any harm (but you're already as strong as a monster).