wow, mystery artist, that's AMAZING. I love the contrasts between the two of them visually -- uptight Percy just coming undone, rough Marcus being, well, rough. :) I also love the contrast between the black background and both boys and the illumination coming from the window. Then there's their expressions and their musculature, and all the little details like the hair on Marcus's arm and chest, the gap between his teeth, and OMG, Percy's expression.