Chúng ta sẽ gặp lại nhau...ở bên kia thế giới.

(Y/n) one of Kibutsuji's wife's. Out of all of the fake wife's he had she seemed to be his favourite, she didn't ask questions or try to stop him when he left, he ended up spending more time around (Y/n) to the point where the he starts to believe he loves (Y/n). For her, he killed off his other wife's and kept her as the only one and treated her with respect as a husband should. However what he did not know is that (Y/n) had guessed that he was a demon. And not to her suprise he was one.

'When I wished for him to be healthy ... When I wished for us to be happy ... When I wished for us to have a life together ... I wasn't thinking of this.' The first demon Muzan created is the young woman he wanted to marry. Starting their new life together, the two of them set out to conquer the sun. But what will happen when their views of life and being demons change? Will Muzan kill his wife, or will something else pull them apart? MuzanxOC, written in the first person perspective. Sort of MuzanxReader.