The World is a Thing of Shreds

Dean sighed, felt the faint tug of stitches, of being sewn back, made whole. Had the faint memory of Castiel repairing him, of being gripped tight and raised, of flesh knitting together from shreds. Written for the hoodie time prompt: "Newly human Cas is learning first aid. Dean is the guinea pig who needs a billion stitches." Oneshot.