The Avengers compound hummed with the quiet aftermath of Endgame. Fluorescent lights flickered overhead casting long shadows across the polished floors of the library wing. You stood alone among the tall shelves your thirty-five years as a SHIELD operative and battle survivor etched in the lines around your eyes and the faint scars along your forearms. Missions in New York the Chitauri invasion and the final stand against Thanos had aged you in ways no mirror could hide. You carried the weight of lost comrades and fractured timelines like medals no one wanted to see. Loki had returned a variant pulled from broken threads yet the same god of mischief who once fought beside and against the team in those chaotic days. You had shared stolen nights before his fall in Asgardian halls and hidden corners of the old Stark Tower no closure only silence and the bitter taste of regret that lingered like old blood.
He appeared from the shadows tall and pale his black hair falling over the green of his Asgardian tunic now mended but still bearing the marks of countless battles. Adult centuries weighed on him though his face remained ageless his eyes sharp with the cunning of a thousand deceptions. "You," he said voice low and precise the syllables rolling like silk over steel. "I did not expect to find you here among the victors of a war I helped ignite and then abandoned."
Your heart raced memories flooding in the way his hands had pinned you against Asgardian pillars the whispered betrayals that turned to desperate passion in the heat of impending doom. "Loki. After everything you still haunt these halls like a ghost that refuses to fade. The compound feels smaller with you back."
He stepped closer the scent of ozone and ancient magic clinging to him. "And you still carry that fire from our unfinished war. Tell me do the Avengers know of our past trysts or do you guard that secret like the veteran you are - the one who has seen too many endings to trust another beginning."
Tension thickened the air like the calm before a storm. You spoke of battles lost and won the losses that aged you both in spirit if not flesh the way Thanos had snapped away half the universe and how Loki's own death had left you hollow. His fingers brushed your arm sending sparks that traveled straight to your core. "No closure," he murmured his breath warm against your ear. "Only this endless pull between us like the threads of fate I once tried to sever."
The kiss came fierce his lips demanding yours yielding yet fierce in return tongues tangling in a dance of old familiarity and new hunger. Hands roamed over armor and fabric shedding layers until skin met skin the cool air of the library raising gooseflesh on your exposed back. He lifted you onto the long oak table mouth tracing your neck down to breasts tongue circling sensitive peaks as you gasped his name the sound echoing off the bookshelves. Fingers delved between your thighs finding you wet and ready stroking with godlike precision circling your clit until your hips bucked and pleas spilled from your lips. "More Loki - please I need to feel you after all these years."
He entered you in one thrust filling deeply the forbidden thrill of an Asgardian prince and a mortal fighter igniting every nerve. Thrusts grew rhythmic hard and relentless your legs wrapped around his waist moans echoing as he claimed you again and again. Sweat slicked bodies moved in unison the reunion raw and explicit each climax building on the last until you shattered around him his release following hot and deep inside you. Yet he did not stop instead slowing to drag out the pleasure his hands gripping your hips as he whispered taunts and endearments in equal measure. "You take me so well after all this time - does the compound know how their veteran craves the touch of a god."
You rolled together changing positions with him beneath you riding him slowly at first then faster savoring the stretch and the way his hands roamed your curves marking you anew. Sensory details flooded every sense the creak of the table beneath you the slap of skin the mingled scents of sweat and desire and the distant hum of the compound's systems. Dialogue flowed between gasps and groans as you confessed lingering feelings and he admitted his own regrets without his usual masks. Another peak built and crashed leaving you trembling in his arms his ancient strength holding you steady through the waves.
Afterglow left you both panting on the table his arm draped over your waist the weight familiar and grounding. "This changes nothing and everything," he whispered pressing a kiss to your temple. A distant footstep echoed in the hall.
As you catch your breath a knock sounds at the library door hinting at interruptions yet to come.