In the world of Super Mario, Bowser is scheming another plan to capture Princess Peach and defeat Mario. His head advisor, the sorcerer Kamek, tells him of a special new power-up he created, the Super Crown, a golden crown with the same thin eyes of a super mushroom on the golden band and a bright pink-mushroom shaped cap. Bowser puts on the Super Crown, thinking it will give him the power to defeat Mario and finally lay claim to Princess Peach, only for it to permanently transform him into a nearly identical version of Princess Peach, but with a few key differences. Those differences include her having chocolatey-tanned skin, firey red hair, a black dress with a spiked choker and bracelets, 6-inch black stilettos, her spiked green shell(albeit smaller), her sharp teeth, her large puffy scarlet bimbo lips, and her spiked yellow tail. The most drastic difference however, is that Bowser’s new female form has a very different physique than Princess Peach’s, that being a 9-foot-tall hyper-busty combination of a muscular Amazon and a busty curvy bimbo. Her giant bouncy breasts are 5 times the size of her head—each bigger than Mario’s entire body—and her ass sticks out like a round bubbly shelf. The rest of her body is jacked to the nines, especially her thighs, back, and abs. Her cinched hourglass physique highlights her massive assets and generous muscle mass. The newly transformed Bowser renames herself ‘Bowsette’, and sets her sights on capturing Mario instead of Peach; the Super Crown rewired Bowsette’s brain to shift her intense, obsessive and possessive love for Peach onto Mario instead. Bowsette no longer cares about marrying Peach, seeing her as competition for her new love, Mario; Bowsette’s love for Mario also has a more affectionate aspect to it that Bowser never had for Peach, making her act much sweeter and doting with Mario than she ever did with Peach in the past. Bowsette leads her Koopa army in an attack on Mushroom Kingdom, storming the Mushroom Palace on Peach’s birthday of all days and capturing Mario for herself. After the attack, Princess Peach forms a rescue party with Luigi, Princess Daisy, and Princess Rosalina to rescue Mario. Along the way to Bowser’s castle, they fight hordes of Bowsette’s minions, many of whom are enhanced by Kamek’s special crafted power-ups, such as Super Crowns, Futa Mushrooms, Vore Flowers, and more. Peach and her party steal some of these special power-ups and use them to help them in their quest.

Chapter 1: The Crown's Curse

The throne room door exploded inward, hinges screaming like wounded pterodactyls. Bowser stomped through, his bulk making the cracked basalt floor tremble. Two Koopa guards flinched back, their shells clacking against the wall. He didn’t even look at them. His eyes were fixed on the gilded throne at the room’s end, now draped in silk the color of crushed strawberries—Peach’s favorite. A nice touch.

He settled onto the throne with a low grind of stone, a smirk playing on his scaly lips. Today was the day. After countless schemes, after that pesky plumber’s endless interference, victory was finally a tangible, sweet-smelling thing. It was, after all, Princess Peach’s birthday. The irony was delicious. The greatest gift she would receive wouldn’t be cake or sparkly trash from Toadsworth. It would be him. King Bowser, claiming her as his bride. The honor was frankly overwhelming, for her.

“KAMEK!” his voice boomed, rattling the cursed torches in their sconces. Their green flame wavered, sending shadows skittering up the slick walls.

From a side archway, the elderly Magikoopa shuffled in, his blue robes whispering against the floor. Kamek adjusted his oversized glasses, a spark of pure, gleeful madness in his yellow eyes. In his wrinkled hands, he carried a velvet cushion. Upon it sat a single object.

“My liege,” Kamek rasped, bowing with a creak. “The fruit of my… most dedicated research.”

Bowser leaned forward, his interest a physical heat in the chamber. On the cushion rested a crown. But unlike his spiked, wrought-iron one, this was elegant, polished gold. Its cap was a smooth, flawless pink, with the iconic curve and large white curves of a super mushroom, gleaming with an inner light. It looked fragile. Delicate. Perfect.

“The Super Crown,” Kamek announced, unable to keep the pride from his voice. “A little something to… smooth over the rough edges of your approach, sire. To make you not just a conqueror, but an irresistible one. A form fit for a wedding.”

Bowser’s smirk widened into a toothy grin. He didn’t need magic to be irresistible. But a new weapon? A new form to shock that stupid Mario and dazzle Peach? Why not? He plucked the crown from the cushion. It was warm.

Without ceremony, he placed it on his head.

The world vanished in a silent, blinding flash of gold and pink.

It wasn’t pain. It was a violent, total recombination. A searing rush of sensation—scales retracting, bones singing as they lengthened and shifted, mass flowing and redistributing itself with a series of wet, internal snaps. He—she—gasped, and the sound was higher, smoother, yet carried the same formidable power.

The light died.

Bowser opened her eyes.

The throne felt different. Smaller. Her perspective was wrong. She looked down at her hands. They were large, powerful, but covered in smooth, chocolatey-tanned skin, tipped with sharp black claws. She flexed them. Good. Strength remained.

“Exquisite…” Kamek breathed, his glasses fogging.

A strange, overwhelming tug filled her chest. A new obsession, immediate and absolute, washing over the old one like a tidal wave. Peach… Peach was pretty, sure. A trophy. But this feeling… this was a need. A possessive, doting, smothering want. And it had a name: Mario. The thought of the short, mustachioed plumber sent a thrilling jolt through her new nervous system. She had to have him. To hold him, to cherish him, to make him hers in every conceivable way. It was so much clearer than the messy, angry desire for Peach. This was sweet. This was right.

Her gaze swept the room, noting the cracked, full-length mirror leaning against the far wall. “Out,” she commanded, her voice a resonant, feminine boom that still held the gravelly edge of a dragon.

Kamek and the guards scurried away, the door thudding shut.

She rose from the throne, movements strangely graceful for her immense size. The world adjusted with each step; the six-inch black stilettos she now wore crunched purposefully into the stone. She felt… incredible. Powerful in a new way. She stopped before the mirror.

The reflection wasn’t Bowser. It wasn’t even fully human.

A nine-foot-tall amazon-goddess-bimbo hybrid stared back. Fiery, luxurious red hair cascaded over broad, sculpted shoulders. Her face was a stark mix of fierce and foxy—sharp cheekbones, a predator’s grin full of pointed teeth, and enormous, puffy scarlet lips that glistened. A spiked black choker clung to her throat.

Her body was a ludicrous, awe-inspiring monument. The strapless black dress was a miracle of straining fabric, barely containing the geography of her chest. Each breast was a pale, pillowy mountain, easily five times the size of her own head, each one dwarfing Mario’s entire body. They swayed heavily with her slightest breath. A smaller, spiked green shell rested between her shoulder blades, and a thick, powerful spiked yellow tail swished slowly behind her, cracking the air.

She turned slightly, admiring the way her back flexed with corded muscle, how her abs were a defined, hard plank beneath the soft, vast curve of her waist. Her ass was a round, bubbled shelf, pushing the dress’s fabric to its limits.

She lifted the hem of the long dress to get a better look at her legs. Her thighs, jacked and enormous, could likely crush a castle gate. They were also covered by a healthy layer of fat that didn’t obscure the curves of her large muscles, but still jiggled nicely with each step she took.

A low, purring laugh escaped her new lips. This… this was a body built for conquest. For pleasure. For him.

Her mind, rewired and buzzing, filled with vivid, lewd clarity. She didn’t just want to defeat Mario anymore. She wanted to pamper him, to spoil him, to utterly own him. She imagined lifting his tiny, overall-clad form with one hand, bringing him to the dizzying softness of her cleavage, letting him struggle cutely against the overwhelming, scented warmth. She pictured him trying to “rescue” her from nothing, his little hands pushing futilely against a single finger of hers. She thought of wrapping him in her tail, holding him close to the powerful muscles of her stomach, kissing him with these giant, smothering lips until he forgot his own name. The ideas were affectionate, doting, and intensely, profoundly selfish. All hers. Her Mario.

In the mirror’s depths, behind her own triumphant reflection, she saw it—a ghostly afterimage, the distorted, raging visage of the dragon she once was, trapped and screaming in silent, impotent fury. She blew it a kiss, her pinkie claw tracing her lower lip.

The throne room doors burst open again. Kamek peered in, expectant.

Bowsette turned from the mirror, her tail swishing with decisive finality. The new obsession burned bright, pushing out all other strategy. Peach’s birthday was secondary now. A backdrop.

“Change of plans, Kamek,” she boomed, her sweet, possessive tone laced with absolute authority. “The army mobilizes at once. We’re not kidnapping a princess for a wedding.” She grinned, flashing every sharp tooth. “We’re going to fetch my boyfriend. I have so many new ways I want to play with him.”

She strode toward the door, each step a seismic event of jiggling flesh and grinding stiletto, her mind already composing the first verse of a love song that would sound like a declaration of war.