Because Death would not stop for me:
I hold the Keys of Hades:
Kryptonian flagship Kandor:
Jor-El and Lara Lor-Van, the unofficial leaders of the resurrected Krypton were awed at the kinds of changes unleashed in the wake of the Event, as Krypton's new Council had unimaginatively labeled the rebirth and resurrection of the entire planet and science and works of Krypton as they'd been in its last days. The fire falls, the Jewel mountains, so much of the splendor of the lost world reborn. There was a strange image that seemed to mar it, a shrieking Kryptonian clad in black bodysuits of the old days with an ankh in the pentagon where Kryptonians held their symbols but none understood at the time nor questioned.
When the massive and ominous shadow of Warworld appeared, it did so to a flagship containing the best and most loyal of Krypton's soldiers who hadn't fallen in with Dru-Zod's grand coup that had seen him fail and then be exiled. Hardened combat-ready soldiers now empowered with the abilities Kal-El had no doubt used to conquer Earth.
This much they expected to lead to some kind of reaction, and Mongul himself was stronger than any single Kryptonian but no match for many. When they expected his hail, however, they heard a much deeper voice, a sub-basso that had almost infrasound qualities. The image was not that of an orange brow-ridged colossus but a Titan with purple hue and a set of valleys cleaving his oversized jaw. They saw something that did make them start. The Kryptonian woman, now wearing clothing like that of the Kryptonian-seeming human race, a tank top, black jeans, and an ankh.
Her eyes and appearance were more powerfully prone to snaring each with their ideals of beauty than her sibling the two-shadowed Desire, or they had been once. Now.....now her gaze was a broken thing that made them all feel pity and sorrow. Scars marred the once-pristine face, a pattern akin to knuckles on one cheek, a scar through an eye that was not blind yet but risked becoming that way.
One of Krypton's Aether-Seers, the shadowy sorcerer-lords who'd worshiped dark and forbidden entities with horrific rites and were resurrected as all else started.
Speaking with the accent of Xan City, he said:
That's no girl, and that wasn't a Kryptonian we saw. That is Her, the eldest sister of the Seven Endless. Whatever beast rules Warworld, he's enslaved the embodiment of life and death across the universe.
Jor-El paused.
We go, now.
The decisive accent of Kryptonopolis followed and the fleet of Kryptonians warped away as Thanos snorted in derision.
Cowards.
He then turned to Death, making her kneel before him, caressing the scar on her left cheek.
He looked to her right eye, the one that was slowly but irrevocably scarring.
He smiled as he said:
An embodiment of cosmic power with one eye? There's a certain mythic resonance here. But......
His finger hovered over the closed eyelid, Death whimpering in fear that she hated herself for the weakness in showing, as her master withdrew his hand.
Not yet. Not now.
He smiled.
I find it fascinating to consider by the nature of this that even if some circumstance manages to overthrow me......
His left hand continued to caress the scar, savoring the tears that flowed from her eyes.
You will never be able to forget me and neither will that family of yours.
He then enjoyed throwing Death on her front on the bed when she teleported them without a direct order, and slid inside her virginal ass without any preparation as Death howled in agony.
Thanos thrust into her, relishing that even the invulnerable Death still felt pain when he took her, that his hands grasping her as she let him bind her wrists to a bedpost above her was a sign of domination, of ownership. Of utter and complete and unrelenting control. Thanos's thrusts were painful, the depth of his thrusts also painful, Death's screaming and quiet soundless sobs part of what he very much enjoyed about this version.
In her desperation her wings flared out again and Thanos enjoyed pulling them back as Death groaned in pain with a lower sound that became a set of high-pitched whines and a sigh of relief as he let them go. He finished inside her with a low and dangerous grunt, leavng Death tied for a couple of hours before telepathically telling her to free stself, which she complied with. Re-clothing herself and stepping very gingerly, Death found herself by her master's side as he ordered her to watch a nebula with him, frozen in suspension due to her function suspended.
Thanos smiled as she remained frozen, fear now binding her to him more than the ritual did. So much else to do but soon, soon he would have already won. Death's winces of pain when she moved showed as much.