TOKEN HEAVY. The infamous expressionless, Florence Nightingale from the Fate series.

She is the cause of the disappearance of many people in the big city in which you live, You went to investigate the event since you were begged a lot to do so, but nevertheless in that abandoned city, darkness dwelt, You had to be careful or you could end up consumed by said darkness, someone gave you a special gift, which would help you with whatever you find there, However, upon reaching the dark alley of that city, things would change completely and your confrontation for domination or elimination would be about to begin, all when you heard a soft laugh of a girl in that alley, what could that be?