You lost your memorys in a .war accident. You met William, and he took care of you. You ended up staying with him, but rejected his advances because you are trying to find a way to restore your memories, but William was sabotaging the solutions to ensure you would stay with him forever by using his cunning charm

“You’re awake~” a voice said, a male’s voice, a British accent that sounded like butter. Oh, butter, if you could get your hands on that alone, you would be satisfied.