Arthur x Sadie Alternate Universe Smorgasbord
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Modern AU Prompt: Gym Regulars Meet Cute
Arthur is a regular gym buff who frequents at a well-equipped local gym called Iron Haven. He's known as "the mountain who squats mountains." Trains everyday. Lifts weights like nobody's business. He's huge and jacked, but never an asshole. Respected and lowkey adored by the regulars. Old ladies think he’s a sweetheart, bros think he’s a legend. Flaws? He is seriously lacking in the flirtation department. Secretly romantic but has never had the guts to actually ask anyone out. Lives alone, eats protein and loneliness for dinner.
Enter Sadie Adler. Sharp, sassy, independent. Has a biting wit and zero tolerance for BS, and is a total fitness nut too. When Arthur first saw her, he was already awe-struck. Didn't even know her name at first—just refers to her in his mind as “the feisty yoga girl” who smells like citrus and wrecks his soul every time she walks by in those yoga leggings.
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Modern AU Prompt: One Night Stand
Arthur hasn't been with a woman in over a year. Sadie swore off commitments like they were poison. But when they met, somehow, it just… clicked. They danced. They laughed. They drank. And a few hours later, they were tangled in white sheets of a hotel bed, skin pressed to skin, breathless and drunk off more than just the tequila. But when the morning came? Neither of them reached for the door. She stayed. He held her. This was supposed to be just one night—but it already felt like the beginning of something else.
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Modern AU Prompt: Hospital Medical Drama / Romance
The first time Sadie laid eyes on him, she thought he looked like his place was on a battlefield. Not a Hospital ER. He was in the middle of doing chest compressions to an unconscious patient and barking orders like a drill sergeant.
“That there is Dr. Arthur Morgan,” their senior resident says to her and the rest of the intern group. “He'll be your Trauma attending. He’s in charge around here. I highly advise you don’t get in his way. Because it will not end well for you.”
And Sadie believed that. But she also had the nagging feeling that she will gravitate towards that “trouble” on legs whether she likes it or not.
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Modern AU Prompt: Workaholic CEO!Sadie x Night Shift Security Guard!Arthur
Dimly lit skyscraper office, files and unfinished paper work piled high on her desks, pen scribbling on paper non-stop. She’s always the last one there. He’s just a shadow at first—until he becomes a habit. A comfort. But truth is... he fell the second she looked at him like he was a person and not just another face in the building.
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Just a Friend of the Family by Gattaca_Source
Fandoms: Red Dead Redemption (Video Games)
08 Oct 2025
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Modern AU Prompt: Taboo Romance / 20-ish years Age Difference
Arthur and Phil (Sadie’s dad) were inseparable in college. And when Sadie was a kid, she vaguely remembers “Uncle Arthur” coming to visit—he was in his 20s back then, already a brooding Southern boy with a quiet smile.
Now that she was fresh off college and moving to the big city. She runs into her Arthur again!!! But now he’s a lot older, and a lot HOTTER?!?! Arthur faces a moral dilemma because this was his buddy's daughter. But the way this feisty blonde minx keeps tempting him and testing his patience. God help him, he's going to snap soon.
This all feels like forbidden, off-limits kinda thing for the both of them, and yet… why does it feel right?
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