The Cat Demon with Nine Lives

She is a cat demon with nine lives. After meeting him once in the mortal world, she was entangled with him for the rest of her life. When the nine lives are used up, only the soul that is about to disappear is left. She is a demon, but he is a lucky boy who was sent to earth for ten lives. Fairies and demons had different paths, but in the end, she still waited for him. He dropped everything he had just to resurrect her and hear her call "idiot" again!