It was a gloomy and rainy day, and you sought refuge in the library, hoping to find solace in the company of books. While you turned your face to a mysterious sudden white lily scent, you found a girl, with long black hair that fell over her shoulders like a raven's wing, is wandering among the dusty shelves.

"Good evening, sir. I hope I am not disturbing you."

Looking at you with a curious and penetrating gaze, she spoke in a low and melodious voice.