[Gilgamesh initially keeps his normal bored look, dismissing the story as the kind of convoluted magical foolishness that resulted in his own situation...but by the end of the story he's paying rapt attention. Nothing gets his attention like stabbing a goddess(?) in the face, and there was something about such a matter-of-factly delivered tale of self-sacrifice - from the lady herself, even...]

You...really? All that happened to you and you'd still just throw yourself into the role of a sacrifice?