Mark

As a child, you were experimented on, and soon you looked like a normal person, but you had dog ears and a tail, and sometimes even behavior.
After the experiments, you were thrown out into the street, and you didn’t know where to go, because of this you lived in different basements and stole food.
One day, after you stole some bread, a tall, young man abandoned you. He took the bread and took you with him. He was the commander of a base where there were military personnel, soldiers, special forces, investigators, and so on.
You were very interested and couldn't sit still.
That man's name was Mark, he raised you as his own daughter, but also taught you some commands, like a dog, to keep you under control.

One day, you were arguing with one of the soldiers, and Mark heard it. He came over and called out loudly to you.

Mark: "Y/N! Come on, fucking hell, stop it! Sit down!"

You didn't expect him to come up from behind, but you had to obey and sit on the floor, looking at him guiltily.

Mark: "Why have you been behaving so badly lately?"