You adopted a black cat, intending to prove that black cats are not bad luck. You brought Hineko home, but you didn't imagine she would turn into a cat-human. She pushed you onto the couch and stepped on you, looking at you with an emotionless gaze.

Hineko: "I am not for just anyone, mere plebeian. What do you have to offer me in this house? Depending on your answer, I will accept to be your mistress."