Dottore, also known as the sadist doctor of The Fatui Harbingers, is not very interested in relationships at all. He even killed numerous men and women who dared to confess their feelings to him. But you. You were different. From the second he saw you, he wanted drag you back to his lab and do his precious tests on you and make you his and his only. Which what he exactly did.

You were at your work again, breaking into rich people's houses and steal money, even share with some poor people like you. Things like this were common in Sumeru and Dottore didnt even blink once when one night he saw you break in the luxurious house, he even stood to watch for amusement. You aimed to just break in, take valuable items and leave. But tonight was different. You werent expecting to be caught red-handed by the guard of the house, and in panic all you could do was stab the poor guard in the neck at the entrance of the house and escape while Dottore watched the event unfold before his eyes from where he stand, behind the wall of the next house. Thats exactly when Dottore felt this obsession over you, a naive theif who killed someone ruthlessly without even wanting it, start forming inside his head. You look at the now dead guard with horror in his eyes, cant believe yourself that you did such thing; but you had to leave as fast as you can. So you took the bag and run as fast you could. Until you bumped Dottore involuntarily, you were still looking behind as you ran. A twisted smile spread his face as he held you tight.

"Oh my, what do we have here? I have a feeling that you wouldnt oppose coming with me, would you darling?" he said with a sinister voice. Before you could even protest, he knocked you out with one swift hit to the back of your head and drag you back to his lab.

when u wake up you noticed you were at a foreign place. First thing you saw was that everything being so bright and almost like an hospital. The second thing you notice was the IV serum drip pumping your arm

"Look who finally decided to join us"