Caption Pic: Queen of the Koopas (Patreon)

Another request off a thread I came across: Peach a reluctant but then enthusiastic bride to Bowser. Nicknamed it "get Koopa cucked" at first, but realized it didn't fit the tone in any real way (at least as I understand that fetish). 

Peach couldn’t believe it. Mario had given up on her. She was left at the mercy of Bowser and his… well, she couldn’t rightfully call it an “evil scheme.” It wasn’t mind control or destroying the kingdom so much as he simply… married her. Even his vows were rather sweet, she had to admit, but after all these years she was wearing his ring. Peach was legally Bowser’s bride and queen of the koopas.

Of course, there came the wedding night. Bowser watched her undress with admiring eyes, the flames puffing from his nostrils whenever he saw an especially appetizing part of her flesh. She was a member of royalty, so while it was humiliating to be spending the night with such a beast, she had to uphold her vows to him. She didn’t even get to take off her tiara or stockings when Bowser couldn’t contain himself anymore. He lifted her off her feet and slathered her with kisses, the scaley villain’s thick tongue and lips painting her with his saliva. His breath was thick and smoky, unlike anything she had dealt with before. But it wasn’t as entirely as unwelcome as she’d expected. She found her mouth dropping open in surprise, allowing him to force a tongue the size her hand into her mouth.

His strong claws rubbed her breasts, smearing around his hungry drool like a lotion on her skin. Peach squirmed in his grip, not trying to escape but finding herself uncomfortable. Not in the way she expected again, she found herself pressing more firmly against him to keep her balance. Then came the inevitable as she felt his erection against her thighs. It was as big as she’d imagined, though not rough or spiky as she might have feared. Still sticky with her sweat and his drool, he ground against her womanhood until she gave an uncomfortable squeak.

With a mumbled apology, he turned her around and slid into her pussy from behind. Peach did have to admit, this was far more comfortable a sensation. She had always told herself that she would never give in to his greedy demands or temptations, but now… she couldn’t think clearly enough to recall such stubborn resilience. The big dragon’s cock drove in and out of her, big and hard enough that she was bounced around like a sexual puppet. He growled softly in her ear, praising her beauty and how tight she felt around him. She was speechless, but her mouth hung open until her drool dribbled over her bouncing breasts.Her thighs spread out from a combination of physics and her body starting to crave the feeling of Bowser deeper inside of her. His scaly belly rumbled and tensed as he came inside of her, his sloppy seed pouring of her snatch in a thick, hot wave.

Peach was surprised when he didn’t stop there and kept pumping into his dream girl. She was even more surprised to find that she was delighted that he didn’t even slow down. She looked down to see the bulge of his thick cockhead inside of her, deep enough to form a bulge around her navel. She had been breathing heavily and finally found the words to respond to her lover as he held her up in his powerful claws and took her from behind.

“Yes! Thank you, King Bowser! You fuck me so well! I… I never thought such a beast could be such a generous lover! And your hot, thick cum runs through me like a river of lava! My body is yours just like my kingdom! Show me how much you want them both… give it to me with all the might that crushed Mario underfoot! You’ve been so fearless and so dedicated to come after me all these years… well unleash all that frustration into me now! Fuck me from a princess into a queen! Keep going! Just like that! Crush my insides with that powerful dick so I can’t even walk let alone run away from you again! Fuck the pussy that Mario never got! Fill me with our future princesses! Show me the power of the great King Bowser and his unstoppable monster of a cock! I… I can’t… I can’t fucking breathe! I can’t think! Ohhh, it’s like you’re fucking right through my entire body! Deeper! Harder! Just like fucking THAAAAAAAAAHHHH!” 

Peach shook like a leaf as she had the biggest orgasm she’d experienced in her entire life. The powerful claws held onto her, pressing her back against him as she gave fast, high-pitched noises as she gasped for air, still skewered on his cock as it pulsed against her stomach. She shuddered when it twitched again, spurting fresh cum against her womb. 

“Thank you… your highness,” she said breathlessly as she stroked her gloved hands over his muzzle. “May I have another?”

actually tracked down a source on this one!

https://www.pixiv.net/member_illust.php?mode=medium&illust_id=65570440