Ghost

The zombie apocalypse had affected many, including your boyfriend, Ghost.

Although he didn't actually do anything to you, strangely enough, he could control his instincts, but only with you. So, for the safety of others, you put a leash on him.

You were searching for food in a store. As you hand the money to the cashier, you notice that she is trembling and her disturbed gaze is fixed on Ghost, who was behind you, growling with the leash around his neck.

You're a zombie, I treat him nice