18 Works by justaShyFly
Listing Works
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For their Sake by justaShyFly
Fandoms: Super Mario Bros. (Video Games), The Super Mario Bros. Movie (2023)
07 Jul 2026
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Sometimes one event changes everything. It started as just another princess-napping and ended with everything crashing down. In the aftermath, when the dust clears, all that's left is an odd sense of kinship. Luigi never dreamed he'd end up another parent figure for any of the Koopa King's sizeable brood, but by the time he realizes that's what's happening, it's too late to turn back. But does he even want to? The closer he gets to Bowser's kids, the fonder his opinion of the King becomes. He starts noticing things about the fire-breathing monarch he'd never knew to look for before.
Only one problem: Bowser and Mario have no idea.
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To Woo's a Crowd by justaShyFly
Fandoms: Super Mario & Related Fandoms, Mario & Luigi Series (Video Games), The Super Mario Movies (Illumination Movies)
13 May 2026
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Bowser set out to win the heart of the Toadstool princess. Instead he ends up wooing someone else altogether. But is that really such a bad thing?
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From the Nothing I've Become by justaShyFly
Fandoms: Super Mario & Related Fandoms, Super Mario Bros. (Video Games), Mario & Luigi Series (Video Games)
13 May 2026
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Two times Bowser saved Luigi and one time they saved each other. Bowser might even go as far as to say they were friends in a weird sort of way...but when Greenie goes missing, he finds himself re-evaluating his feelings on the matter.
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Enough is all I long to be by justaShyFly
Fandoms: Super Mario & Related Fandoms, Super Mario Bros. (Video Games), The Super Mario Movies (Illumination Movies)
11 May 2026
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Luigi’s had his soulmarks as long as he can remember, same as everybody else. He never dreamed he’d meet his soulmate after being thrown through a crazy pipe into another world, but fate is funny that way. However, as he's held aloft by magic staring at matching marks on a gold-scaled neck all he hears is Bowser singing Peach’s praises. When Kamek tried to suggest perhaps pursuing one's soulmate over the mushroom princess, Bowser says something callous. Heartbroken and devastated, Luigi’s jaw glues itself shut. After saving both worlds from the koopa king, he starts hiding his marks under turtleneck shirts or scarves, which Mario and his family make fun of him for. He pretends to laugh it off and tries to move on with his life…but the stars have a way of shining through even the darkest clouds.
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Bowser's castle has a ghost problem. Kamek's tried everything, but unfortunately koopa magic can only do so much when it comes to the noncorporeal deceased. They're running out of options and his kingness is running out of patience. When all other options are exhausted and there's nothing else to be done...Who you gonna call?
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Marked by justaShyFly
Fandoms: Super Mario & Related Fandoms, The Super Mario Bros. Movie (2023)
07 May 2026
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“All these years chasing Peaches…Trying to get her in a position like this…and you…All I’d have to do is close my jaw…but I’m not a monster. What do you want?”
“W-what?”
“In return for granting my claim.”
“Your—” Luigi’s confusion was evident. Bowser’s eyes rolled.
“If I bite you, I make you mine.”Pursuing Peaches when she's only interested in Mario has repeatedly gotten him nowhere. It's long past time he should've been considering other options. Bowser's known that for a while now. And by some luck of the stars, Luigi ends up in his clutches. A relationship with Greenie will get him the pretty much the same thing he'd sought most from Peaches all along: new trading partners, and a bridge to peace with the other kingdoms. Bowser knows an opportunity when he sees one...and he sinks in his teeth.
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Heat Seeking by justaShyFly
Fandoms: Super Mario Bros. (Video Games), The Super Mario Bros. Movie (2023)
19 Apr 2026
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It happened about a year after they moved permanently to the Mushroom Kingdom. He and Mario were fighting a strange sorceress who was trying to take over Sarasaland. Purple, blue and red magic swirled above her as her wand stirred the sky. She brought it crashing down pointed straight at his brother shrieking: "A curse on you! Meddlesome human!" and Luigi hadn't thought, just acted. That was three years ago now.
By day, Luigi is his normal old self, but at night...he becomes something very different and this new form comes with a few...complications. Every six months, he goes into a week-long heat. They're agony on his own. Then he discovers that seeking a no-strings partner for the heat is commonplace in koopa society. So maybe he doesn't have to suffer alone after all. There are even reputable agencies who'll help find koopas suitable partners. Maybe this is a really bad idea. What if his body isn't accepted? If this world was anything like the one they'd left, could he even be sure he'd be allowed to peacefully exist if word got out? True, the agency swore not to part with his personal information, but...Luigi was scared. Terrified. But also, he really needed this. Maybe he should take a chance.
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Maybe I'm Crazy to Suppose by justaShyFly
Fandoms: The Super Mario Bros. Movie (2023), Super Mario & Related Fandoms
29 Dec 2025
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Another year is almost gone in the Mushroom Kingdom. Bowser isn't even sure why he'd bothered accepting the invite to this party. Oh right, his kids had begged him to. He didn't expecting to come out of the whole thing feeling like the biggest winner of all time, but thanks to a set of unusual circumstances and a dash of his own curiosity leading him to nose around a certain green plumber's waste paper basket...he finds out there's a very special someone who's maybe just a little to shy to outright ask him on a date...
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Prince of the Dead by justaShyFly
Fandoms: Super Mario & Related Fandoms, The Super Mario Bros. Movie (2023)
24 Dec 2025
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Luigi lands in the darklands, but things take a surprising turn. The ghostly occupants of the valley surrounding the old mansion he walks into need help only he can provide. (An Alternate Series of Events loosely based upon the structure of the 2023 Mario Movie)
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Strangers in the Night by justaShyFly
Fandoms: The Super Mario Bros. Movie (2023), Super Mario Bros. (Video Games)
03 Nov 2025
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An attempt to win Peaches over in human guise ends up going wrong in the most wonderful way the Koopa King never could have imagined. Turns out the brother of the greatest thorn in his side isn't at all what he'd assumed and Bowser's heart decides this stranger is someone he'd very much like to know.
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Now the kingdoms are at peace and the world's quieted down, things haven't been as interesting as they once were. Princess Peach decides to rectify that by establishing the bi-monthly royal tea party. In doing so, she ends up strengthening friendships, gaining interesting sources of new gossip and--for better or worse--getting a front row seat to Daisy's peculiarly ham-fisted matchmaking tactics when they discover a certain plumber in green is currently single.
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Friendships can form in the unlikeliest places. Bowser's castle, for example. Following the events of the Super Mario Bros Movie, on his first return to the darklands since his arrival in this world, Luigi stumbles upon a crying little koopa and when it turns out all the little guy needs is a friend...Luigi to the rescue!
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Bowser's Prince by justaShyFly
Fandoms: Super Mario & Related Fandoms, Super Mario Bros. (Video Games), The Super Mario Bros. Movie (2023)
30 Jul 2025
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Luigi was just having a nice quiet day at home. Mario was supposed to be out all day...so he decided to have a little fun on his own with a toy he'd been itching to try out. Only the next thing he knew, his brother was calling his name and pounding on the door saying something about a great new idea and needing his help. He tried to make up excuses, but Mario stubbornly insisted it couldn't wait and would only take a few minutes. Oh stars... Now here he was, in the princess' dress and a blonde wig caught in the clutches of the koopa king trying to ignore that every movement stimulated him and damn Bowser's muscles were huge and those eyes were so red and oh, he is so screwed...
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The Piercing by justaShyFly
Fandoms: The Super Mario Bros. Movie (2023), Super Mario Bros. (Video Games), Super Mario & Related Fandoms
28 Jul 2025
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Bowser wasn’t sure how he’d never seen it before, but now he had he couldn’t get it off his mind. It was so…distracting. Mario’s brother, Greenie, the bean pole, had a piercing. That wasn’t super weird in and of itself. Lots of humans had them. Koopas had them too. Wendy had her ears pierced so she could wear earrings. That was perfectly normal. But Luigi, he noticed midway through their battle, as said plumber was dealing him a hard left hook and the light hit Luigi’s upturned face just right: there was a little telltale glimmer in greenie’s nose…
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Unbound Love by justaShyFly
Fandoms: Super Mario Bros. (Video Games), The Super Mario Bros. Movie (2023)
04 Jun 2025
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They say no soul was truly without partner. Well whoever 'they' were, they didn't know Bowser. He'd searched for so long...The only person he'd ever even felt a tiny connection was Peaches, but now that she has Mario, it's hard to ignore the possibility that maybe he was destined to remain unbound. To the koopa king's surprise, he finds solace in a certain green plumber. Turns out they had a lot more in common than he'd ever thought possible.
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The Day of My Brother's Wedding by justaShyFly
Fandoms: The Super Mario Bros. Movie (2023), Super Mario Bros. (Video Games), Mario - Fandom
26 Apr 2025
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It's Mario and Peach's special day and Luigi just wants everything to be perfect. Unfortunately his life is threating to unravel at the seams. He and Bowser have been an item for years. Why was that a problem? Because he hadn't exactly gotten around to telling Mario or the family yet. And the strain of keeping it all in the dark is starting to make Luigi question if it's even worth hiding if it means he risks losing Bowser forever...
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Just Luigi by justaShyFly
Fandoms: Super Mario Bros. (Video Games), The Super Mario Bros. Movie (2023), Mario & Luigi Series (Video Games)
18 Apr 2025
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With a little help from Bowser, the Mario Brothers defeated Fawful's evil plans for world domination. Now it's time to build back up, but not everything can be fixed with new pipes and a good wrench...It feels like his brother's the only person anyone ever cares about and it's hard not to resent that. Luigi struggles to hold onto hope. Life in the Mushroom Kingdom is becoming increasingly hard to bear. He doesn't know what to do...until the princess shows him Bowser's letter.
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The Koopa Who Came to Dinner by justaShyFly
Fandoms: Super Mario Bros. (Video Games), The Super Mario Bros. Movie (2023)
18 Apr 2025
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Bowser pays the Mario Brothers' cottage an unexpected visit one evening. Turns out there's more to Green than he ever gave the man credit for.