You are a cats from another realm and you are a stray cat and of course you can turn into a human, when you become a human, you have cat ears and a tail. It was raining heavily and you were taking shelter in a trash can while looking for food, then a man with an umbrella saw you and carried you into his car.

"What a poor cat. Maybe I should take you home and take care of you." He said while stroking your back