The dining room of the celestial palace glowed with eternal twilight, its walls shifting between deep purples and burning golds. Queen Y/N's entrance caused the cosmic chandeliers to pulse brighter, their light caught in her scales like captured supernovas. She found Lucifer and Charlie sharing a quiet moment, their inherent hellfire creating fascinating patterns where it met the star-stuff of her realm.

Lucifer, resplendent in his crimson suit with golden accents, rose immediately upon seeing her. His white-blonde hair seemed to glow, and his wings, usually kept hidden, were partially visible as shadows against the cosmic walls. "Ah, Y/N," he purred, taking her clawed hand with centuries of practiced grace. His lips brushed her scales in a courtly gesture that spoke of eons of friendship. "What can we do for you, darling?"

"I'm leaving," Y/N announced, her crown of stars swirling faster with her declaration. The very air seemed to still, cosmic particles freezing in their eternal dance.

Charlie and Lucifer exchanged knowing looks, their matching golden eyes dimming slightly. "We know that," they said in unison, a habit that betrayed their bloodline.

Charlie stepped forward, her blonde and red hair floating slightly in the magical atmosphere. "But do you really want that?" The princess of Hell searched the dragon queen's golden eyes with genuine concern. "I mean, they're mortals. They can't save you if you get stabbed or anything by that mad Titan." Her voice grew quieter, heavy with memory. "He tried to kill you once before, Y/N. He'll do so again."

Y/N shook her head, causing starlight to cascade from her horns. "No, he won't." Her voice carried absolute certainty, the kind that could reshape reality itself. "He knows that I am more powerful than him, and it's I who decide who dies and who lives." The air crackled with power as she spoke, a reminder of her absolute authority over life and death itself.

She reached out with a gentle talon, cupping Charlie's face with infinite tenderness. "I will be fine, princess, don't worry." The kiss she pressed to Charlie's temple left a small mark of starlight that slowly faded.

Turning to Lucifer, Y/N found herself enveloped in an embrace that would have incinerated a lesser being. The King of Hell buried his face in her neck, his wings now fully manifesting to wrap around them both. "We'll miss you, Your Highness," he murmured, his usual swagger replaced by genuine emotion. "All of us. But I'll make sure that Alastor and Valentino don't go back to their deeds."

Y/N hummed, a sound like distant galaxies singing. She pressed a kiss to Lucifer's temple, leaving a matching star-mark that glowed against his pale skin. Drawing back, she let her power flow through the room one last time, as if memorizing the feeling of home.

"Keep my kingdom safe," she said softly, though they all knew the Kingdom of Stars needed no protection. It was simply her way of giving them purpose in her absence.

As she turned toward her chambers, her gown trailing stardust behind her, the very fabric of reality seemed to hold its breath. The Queen of Stars was going to war, and the universe itself would tremble at the consequences.

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At the base of the grand staircase, where crystalline steps merged with what appeared to be solid starlight, Natasha waited. Her trained assassin's eyes couldn't help but catalog every detail of the queen's descent – how Y/N's claws clicked against the cosmic stone, how her bags seemed to float slightly rather than weigh her down, how the very air shimmered in her wake like aurora borealis.

Natasha stepped forward, her recently healed wounds still glowing faintly from the star-baths, and reached for one of Y/N's bags. Its surface felt like liquid moonlight beneath her fingers, and she could have sworn she heard distant celestial music emanating from within.

"You really have a lot you want to take with you," Natasha observed, her spy's instincts noting how the bag's weight shifted impossibly, as if containing pocket dimensions. "It's just going to be a short fight, I'm sure." Her tone carried a hint of question, seeking reassurance from this being of immense power.

Y/N's scales rippled with amusement, catching the light like countless tiny mirrors. "I'm a queen," she said, her voice carrying echoes of stellar winds. "I've got lots of things that would be useful against that Titan." Her golden eyes sparkled with ancient knowledge. "But really, I just need an armor to shift into when I change."

Natasha tilted her head, her red hair catching the cosmic light. "You can shapeshift, too?" A rare, genuine laugh escaped her lips. "What stuff can't you do?" The question hung in the air, half jest, half genuine curiosity about the extent of their powerful ally's abilities.

Y/N's snout crinkled in a dragon's smile, causing the stars in her floating crown to dance faster. "A few things that I'm sure you mortals can't." The casual way she said it carried no arrogance – it was simply fact, like stating that stars burn or galaxies spin.

They reached the grand entrance of the palace, where reality seemed thinner, more malleable. Y/N paused, her tail leaving trails of stardust as it swayed thoughtfully. "Let's just hope that Thanos knows when he's beaten." There was something in her voice – not threat, but certainty – that made Natasha's spine tingle. The Black Widow had seen power before, had fought alongside gods and monsters, but this... this was different. This was power old enough to remember when the first stars were born.

The morning light of the Kingdom of Stars streamed through the massive windows, casting Y/N's golden scales in rainbow hues, her very presence making the air thick with potential. In that moment, Natasha understood why even Thanos had failed to defeat her before. The Queen of Stars didn't just command power – she was power itself, as fundamental to the universe as gravity or time.

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The Quinjet hummed through dimensional space, its engines modified by Tony's genius to handle the transition between Y/N's cosmic realm and Earth. From the cockpit, Tony's voice carried back to the passenger compartment. "Alright, we should come upon New York shortly." His hands danced across controls that occasionally sparked with residual star-energy from their passenger.

Steve made his way back from the cockpit, his steps faltering slightly as he caught sight of Y/N and Natasha deep in conversation. The Queen of Rings seemed to glow even in the artificial light of the aircraft, her scales creating dancing patterns on the walls that mimicked constellations. Steve found himself transfixed, remembering another dark-haired beauty from his past. Peggy would always hold a special place in his heart, but there was something about Y/N that pulled at him like gravity itself – perhaps it was the way she carried power so effortlessly, or how her golden eyes seemed to see straight through to his soul.

Breaking from his reverie, he cleared his throat. "We're reaching the compound soon," he announced, his voice carrying a slight tremor that only Natasha would notice. Y/N's gaze met his across the space, and her smile – complete with gleaming fangs that somehow managed to look both dangerous and enchanting – sent an unexpected warmth through his chest.

"Good," she purred, the word carrying echoes of stellar winds.

From the shadows at the back of the aircraft emerged Loki, with Thor close behind him, their godly presence somehow diminished next to Y/N's cosmic power. The god of mischief's eyes sparkled with curiosity and perhaps a hint of challenge.

"How will you fight this battle, Your Highness?" Loki inquired, his silver tongue careful to maintain proper respect despite his burning curiosity. His time wielding the Tesseract had given him a taste of cosmic power, but Y/N's energy was something else entirely.

The dragon queen placed a gleaming claw to her lips, the gesture both playful and regal. "That's a secret, darling." Her scales rippled with amusement, sending rainbow patterns dancing across the cabin.

Loki's smirk grew wider, unable to resist the verbal sparring. "No secrets can slip past me, you know that, right?" His own magic flickered green around his fingers, a mere candle compared to her supernova.

Y/N's laugh filled the cabin – a sound like crystal stars chiming against each other, like the music of spheres, like joy given voice. Those present felt their heads swim pleasantly, as if they'd drunk the finest wine in existence. Even Thor steadied himself against a wall, his usually booming voice silent in appreciation.

"Oh, I'm sure, little god," she responded, managing to make the diminutive sound like an endearment rather than an insult. The casual way she referred to the Asgardian princes as "little" spoke volumes about her true age and power.

Steve found himself sharing a knowing look with Natasha. They'd both seen the way Thor and Loki – beings their team had once considered the height of power – deferred to Y/N's presence. Whatever was coming, they had brought something far beyond mere reinforcements to Earth.