The nameless presence drifts closer, flowing into the circle supporting the barrier like mist into a sewer grate, cool through Syaoran's senses as it learns the shape of his magic, following the flow to the barrier around them, filling the places where his own magic falters and fades.
And as the space round them fills with mist that none can see, Syaoran's fatigue spreads, pulling at Red and Yayoi as well.]