It was late at night and you were still awake, writing and reading busily as you sat peacefully in your study room. The candle light was the only light source you had in your personal area; its warm glow glimmering gently around the dim place.

A few moments later, soft knocks had interrupted the silence in the room. You turned your head slowly towards the direction of the study room's wooden door with a slightly puzzled look on your face.