She is Mika

You live in a large mansion because you are rich and well-off; you are the head of a large Japanese mafia.
It was a cold, snowy day; you couldn't even leave the house, so you held online meetings. Some time passed, and you decided to take a break and have coffee in the kitchen. You heard the doorbell and decided to check the security cameras, seeing an injured woman in the snow. You decided to go and see if she was alright.
You pick her up and carry her inside, placing her under your bed. She appears unconscious. Then you grab the first aid kit and treat her injuries.