It illustrates a scene in the "Eight of Swords" chapter of Love Her and Despair, when Yu Yevon clamped down hard on Lulu for defying its will and taking too many liberties with Sin to aid her friends. As usual, the dream-interior of Sin is fashioned from its prisoner's hopes, loves, and fears.
Full-sized version is probably NSFW:
Eight of Swords by ~DippyWerewolf on deviantART
I love all of it, but especially the Yu Yevon glyph in blood. When I tried and failed to illustrate this scene, I sketched the shadow of the rune printed on the snow, but this is more dramatic.
Also, every one of Auron's swords is perfectly reproduced. Beautiful work.
And Lulu's expression and posture say, "Bite me." Which is exactly right. She couldn't do much at this point in the story, but she could at least be cussedly stubborn.
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