Disclaimer: I do not own any of the material appearing in this story.

It was another glorious day in the Mushroom Kingdom. The sun was shining, Yuyuko was making a mess of things in the Shy Guy Buffet, the Toads were going about their day... and a single airship was floating above Peach's Castle. Peach was held hostage in the airship while Bowser locked in combat over the Mario Bros, Reimu, Marisa and Natsu. Bowser was wearing a fancy white tuxedo to boot, complete with a top hat!

BGM: Bowser Battle (Mario and Luigi: Partners in Time)

"Hah... hah..." Mario panted.

"Bwahahaha! I'm on top of my A game!" Bowser laughed. "You can't stop me!"

"We can sure as hell try!" Natsu yelled and jumped into the air. "FIRE DRAGON'S IRON FIST!" He blurted out, punching Bowser in the face but he blocked it with his arms and grabbed the Dragon Slayer, quickly throwing him over to Luigi.

"Master SPARK!" Marisa yelled, quickly unleashing her colorful laser on Bowser, but he rolled out of the way and delivered a one-two punch on her, slamming her into the mast.

"Marisa!" Reimu exclaimed and then saw Bowser towering above her as he quickly punched her, but she quickly blocked the attack, and quickly fired a few Yin Yang Orbs at him, which he deflected with his shell, but she wasn't deterred as he got hit by an Omnidirectional Demon Binding Circle that nearly knocked him off the ship. Mario jumped up in the air and punched him in the face, then bringing out his hammer and swinging it at his chest to make him slide.

"FIRE DRAGON'S ROOOOOAR!" Natsu yelled while Luigi activated his Thunder Hand and quickly shot lightning bolts at him.

"Rrrgh! Kamek! I need backup!"

"Coming, sire!" Kamek yelled, quickly appearing behind the gang and firing a magnetizing spell that pulled them all together and then he fired a binding spell, chaining them together. "Ha! Gotcha!"

"No!" Peach yelled.

"Nnngh! Damn you Kamek!" Marisa yelled.

"BWAHAHAHAHA! This is too easy!" Bowser laughed as he approached them. "Now, this is where we part ways. As soon as i'm done with you, I will head off to my wedding and make Peach my bride! Farewell, everyone!" He exclaimed, as he started to charge up a flame attack. "Game over!" He exclaimed... and then suddenly, a laser hit Kamek in the face, sending him flying.

End BGM

"YAH HOO HOO HOOEY!" Kamek screamed just like Goofy.

"Huh?!"

"Hey buddy." A voice said as a small skeleton landed on the ship. "I've been trying to take a nap but your ship has interrupted it."

"Who the devil are you?" Bowser asked.

"Me? Heheheh... I am Sans, and since you have disturbed my sleep-" His eyes darkened, before a blue flaming eye appeared in his left eye socket.

BGM: Megalovania (Super Smash Bros Ultimate)

"-Sleep disturbances like you... are about to have a bad time!" He declared, summoning Gaster Blasters.

"Wait, what the-" The Gaster Blasters shot at him, quickly forcing him to avoid the lasers as he ran over and swiped at Sans, but he quickly dodged.

"Too slow." He said as he kept swiping at him repeatedly but he dodged them gracefully. "Nope. Sorry. Too slow! Are you even trying?" He even let out a chuckle before jumping back, summoning bones as he picked Bowser up telepathically and slammed him into the bones repeatedly before slamming him into the ground. He aimed a Gaster Blaster at him and shot him in the tail.

"GYAAAAAAAH!" Bowser roared and glared at Sans, breathing fire but he side stepped out of the way as he picked Bowser up telepathically and slammed him into a mast, then threw several bones at him. "Ow! Gah! Ooof! AAARGH!" He grunted before getting hit by several Gaster Blasters. "AAAAAAAARGH!"

Bowser fell to the ground, but he looked up at Sans with a snarl. He got back up and roared at Sans before glowing brightly and transforming into Giga Bowser, aiming a solid punch at him, but Sans had dodged and was resting on top of his fist. "Oh, nice view from up here." He said, letting out a fake yawn.

"TAKE THIS SERIOUSLY!" Giga Bowser roared, swiping at him but Sans had jumped off and then summoned several Gaster Blasters which all surrounded the Koopa King, as he tried to duck... but then he remembered that he was too large as he sweatdropped at this before getting blasted alive from Gaster Blasters as he roared in agony before turning back to his normal form.

"This is over." Sans telepathically picked him up and tossed him to and fro on the airship, slamming him into the masts, throwing him on the ground and then threw him high into the air, then he summoned a large Gaster Blaster and fired a huge laser, slamming into Bowser.

"RAAAAAAAAAAAAAH!" Bowser roared, flying high into the sky and turning into a star shining brightly into the sky.

"Whoa... the hell just happened?" Reimu asked.

"Thanks whoever you are... now get us out of here!" Marisa exclaimed.

"...Didn't you hear me?" Sans turned to the group. "You disturbed my sleep. Your fighting woke me up... and now it is the time for you to have a bad time as well." He said, aiming Gaster Blasters at them. "Farewell!"

"NO!" Peach exclaimed, watching in horror as the Gaster Blasters started lighting up.

"Farewell." Sans said, and fired the Gaster Blasters.

End BGM

"GAAAAH!" Reimu yelled, quickly shooting up from her sleep. "Who what where why?!" She exclaimed and looked around, seeing that she was back in her shrine. Crickets were chirping just outside, as it was still night. She panted to herself, holding on to her chest as her heart was racing like mad as she wiped the sweat from her forehead.

"Goodness gracious..." Reimu sighed. "That's it. No more Fire Flower Ramen before bed." She said as she laid back down, closing her eyes and falling asleep once more.

April Fools, y'all! I regret NOTHING! XD