Eldritch Tentacle Knots Your Spine Alive (Patreon)

An ancient eldritch shapeshifter discards her human form entirely, deploying writhing alien tentacles to weave a living knot inside you until your spine forgets how to bend. By the time the final coil locks deep within your marrow, you are no longer a man but a hollowed vessel where her brood sleeps and her scent tastes like salt.