AN: This is a request from emby14334 on tumblr. :) It's definitely my favorite request ever lmao.

"Mixed Up"

Rated T.

Summary: Lucy and Aquarius have switched bodies, leaving their boyfriends stupefied. Will they ever change back or are they stuck in each other's bodies forever?

Mixed Up

Natsu stared at the woman in front of him. Her electric-blue hair was slicked back as usual, sleek and falling down her back. She held her golden urn over her hip, unaware of its lopsided position causing water to trickle out of it and onto the hardwood floor of the guild. Her face, which was usually plastered with a permanent scowl, held an expression that he'd never seen on the mermaid's face before. Her eyes were wide, her brows drooped as she was utterly perplexed.

"What the hell do we do!?" Aquarius cried.

"How the hell am I supposed to know!? This is your fault, idiot!"

Natsu gasped, whipping his head towards the girl standing next to Aquarius. Her long golden tresses were tied into a side pony as usual. Her keys were still attached to her beltloop. Her arms were crossed over her arms while a scowl rested on her face as she outright glared at Aquarius.

Natsu swallowed thickly, sweat dripping down his forehead. Lucy was not only talking back to Aquarius, but was also glaring at her. Was she trying to sign her own death wish or something?

"Natsu, help me!" Aquarius whined. She latched onto his arm, staring into his eyes with desperation.

He noticed immediately that his arm was tucked in the cavern of the older woman's breasts. Whirling towards his girlfriend, who watched them with a scowl, he paled.

"It's not me, I swear!" he shouted, trying to shake the spirit off of him. I didn't- she's the one- IT'S NOT MY FAULT, LUCY!"

"Huh? Why the hell are you looking at me, brat?" Lucy jabbed, her brow arching.

"What? Because she's- her boobs- WHAT IS GOING ON!?"

"Natsu, I'm Lucy," Aquarius said, letting go of him. "Aquarius and I switched bodies."

"What!? How?"

"Well, the job I took alone that required some rough translations ended up being another changeling spell."

"So why did you switch with Aquarius of all people?"

Aquarius- in Lucy's body- glared at him. "Huh? Is there something wrong with switching with me?"

"N-No ma'am!" Natsu replied, his voice higher pitched than normal. The mermaid was just as terrifying as a certain redheaded mage.

"Anyways," Lucy began, "I switched with Aquarius because we were working by a fountain and I summoned her to keep me company." She'd only recently found her new key and wanted to spend as much time with her as she could.

"And I keep telling you not to summon me from weird places!" Aquarius barked.

"It was a pretty fountain! I thought you'd be okay with that!"

"Yeah, well now look at what happened!"

"It's not my fault!"

"You're the one that read the spell! Who else's fault would it be!?"

"The one who wrote the stupid thing!" Lucy groaned. "Forget it. Arguing is only wasting our time. We need to undo the spell before we're stuck like this forever! Where's Levy-chan?"

"On a job with Gajeel and the twins," Gray answered, approaching the group. He let out a whistle. "You really messed up this time, didn't you?"

Lucy hung her head back, groaning again. "It's not my fault! Just help me already!"

"We don't know how to undo spells like this. We were completely useless until Levy came back last time, remember?"

"I can't be stuck like this forever though!" Knowing that Aquarius was about to lose her temper, Lucy quickly added, "Even though Aquarius is beautiful and perfect in every way, our powers are weaker this way!"

"Oh! You have Aquarius' powers, huh?" Natsu asked, a wide grin stretching over his face. "Try it out! I wanna see!"

"There's no time for that!"

"Actually," Aquarius began, "I am going to try to use your powers." Grabbing a familiar golden key, she called out, "Open, Gate of the Scorpion, Scorpio!"

In a bright light, Scorpio appeared. His eyes were drawn towards Lucy- who was in Aquarius' body- and ran in for a hug, only to be punched away by a flaming fist.

"Keep your hands off of Lucy!" Natsu shouted.

"Lucy?" Scorpio asked, rubbing his jaw.

"Help me, Scorpio-kun!" Aquarius whined, latching onto the spirit while still in Lucy's body. "That brat and I switched bodies!"

Natsu's brows slanted as he stared at Lucy's body clinging around Scorpio. Even though he knew it wasn't Lucy herself hugging him, it still sparked a burning jealousy to run through his body. With clenched fists, the boy took a step towards them to bash Scorpio upside the head again when Lucy grabbed onto him.

"Now is not the time for your irrational jealousy!" she lectured. "Now is the time to help fix us!" Turning towards Aquarius, she arched a brow. "How were you able to use my powers so easily?"

Aquarius gave a smug grin, one that was rare on Lucy's face. "I'm a celestial spirit. Celestial spirit magic comes easy to me. Did you forget? I was the one teaching you how to use this magic when Layla got sick."

"Does that mean I can use your magic easily?" Lucy asked, feeling excited. Grabbing her urn in two hands, Lucy twirled around, just as she'd seen Aquarius do on so many counts. With a loud battle cry, she urged for a typhoon, only to be given a low trickle of water. "Why can't I use your magic then!?"

"Because you aren't a celestial spirit. Celestial spirit magic and the magic of the spirits themselves are two different things. I am summoned using your magic, so I have a feel of yours already. You only use my magic through Star Dress, but using my urn itself is going to be impossible for you."

"So… You're saying that if we're stuck like this… that I'm completely useless?"

"Yep."

"Change us back!" Lucy cried, shaking Natsu by his shoulders. "That's not even the worst part of this! If we don't change back, I'm going to have to live in the Celestial Spirit World while Aquarius lives here!"

Natsu, Aquarius, and Scorpio paled. That would mean that they would rarely get to see their significant others.

Within seconds, the four were pacing back and forth, muttering ideas to themselves- or in Natsu's case, running around the guild shouting incentives.

"How much time is left!?" Natsu asked.

Macao shrugged. "Judging on when Lucy came back from her job, I'd say about five minutes."

Natsu and Scorpio collapsed to the floor.

"Someone do something!" Natsu cried, banging his head repeatedly on the hardwood floor.

"I'll only get to see Aquarius when she summons me," Scorpio complained.

Lucy was in a fit of tears, hugging herself. "I don't want to wear a bikini top for the rest of my life! And I want my legs back!"

Aquarius scoffed. "As if I want to be stuck in your body! My tail is way more appealing than these legs!" She tried to take a step forward, only to lose her balance and fall on her face. "How the hell do you people even walk with these things!?" She'd been dragged back to the guild by Lucy and only just learned how to keep balance. Walking was still out of her level of expertise.

"I'd say around four minutes left," Macao reminded them. "Probably."

Happy flew over to Lucy, who was in a puddle of her own tears at that point. "You don't have any ideas?"

"Not at all!" she answered. "Levy was the one that figured it out last time and she didn't have time to explain how she reversed it!"

"Why don't you just repeat what she did?"

"Because it's in a different language this time! That's why I didn't know it was a changeling spell to begin with!"

"Three minutes left!" Macao's voice boomed out.

"I guess this it," Natsu said, his voice lifeless as he laid on the floor. "I guess I'm stuck with only seeing Lucy a few times a day."

"More like never," Aquarius replied. "I'm going to be summoning Scorpio-kun, not Lucy!"

"Oi! That's not fair!"

"Better hope she gets strong enough to go through her own gate soon!"

The four began bickering.

"Two minutes left!" Macao shouted.

"What did I do to deserve this?" Lucy whined.

"What did I do to deserve this?" Aquarius asked. "I'm going to be stuck in your body forever! Scorpio's attraction towards me is going to go away because of it!"

"That is so rude! I'll have you know I've worked my womanly charms to get discounts many times!"

Aquarius scoffed. "Please. What womanly charms? You mean these sad sacks?" She cupped her breasts- well, Lucy's breasts- and lifted them. "As if you could charm anyone with these things!"

"Hey! Cana says that my boobs are perfect!"

"You mean that old hussy? She's just as charmless as you are!"

"One minute left!" Macao shouted. "Probably."

Natsu and Lucy hugged each other. Natsu wasn't used to being shorter than Lucy, but as she was stuck in Aquarius' body, she loomed over him with ease.

"You've gotta learn how to go through your own gate!" he said.

"Who knows how long that'll take?" Lucy cried.

"Then I'll visit you in the Celestial Spirit World! I'm sure that old mustache man wouldn't mind!"

"I'm sure he wouldn't, but there's no way that would work. One day in the Celestial Spirit World is three months in this world! Life would pass you by before you know it!"

"It's worth it," Natsu said, ruffling her hair. He'd never seen Aquarius with messy hair before. "Don't worry about me."

"Natsuuu!" Lucy cried, hugging him so tightly he couldn't breathe.

"Ten seconds left!" Macao reminded them. He began counting down.

Natsu grabbed Lucy by the shoulders. "I don't care whose body you're in. I still love you."

Lucy wiped a tear from her eye, smiling at him. "I love you too."

Macao's voice caught their attention. "Five, four, three, two, one!"

A bright light enveloped the guild, blinding everyone inside. Once it finally died down, Aquarius and Lucy were still there. Natsu wrapped his arms around Lucy, bringing her in for a hug.

"I'm sorry I couldn't help you," he said.

"Get the hell off of me, brat!"

Natsu's eyes widened as he was pushed back. Staring at Aquarius' face, he saw a scowl resting over it as she tried to straighten her hair.

"Lucy?" he called out.

"What the… I'm back! I'm back in my body!" Lucy shouted. She grabbed onto her ponytail, rubbing her hair against her cheek fondly.

Natsu whipped his head towards the blonde. "Lucy? That really you?"

The girl smiled at him, tears pricking her eyes. "It's really me, Natsu."

Natsu gave a face-splitting grin, running towards her and tackling her into a hug. "How are you back in your own body!?"

"I have no idea!"

"I can explain that," a familiar voice rang out. All heads turned towards the entrance of the guild, where a petite blue-headed girl stood beside a lanky orange-haired boy.

"Levy-chan! Jet!" Lucy explained. "It was you!"

"Yep!" Levy replied. "Jet overheard what was going on and brought me the flyer. I worked on decoding it while we rushed back here. I made it just in time!"

Lucy and Natsu ran towards the two, hugging them.

"Thank you so much, Levy-chan!" Lucy exclaimed. "Thank you, thank you, thank you!"

Natsu shook Jet by the shoulders, tears streaming down his face. "You aren't as useless as I thought!"

"…Is that a compliment?" Jet asked.

Lucy turned back towards Aquarius. With a smile glued to her face, she said, "Looks like things are back to normal."

"You're lucky they are," Aquarius replied. "Otherwise I would've had to murder you. Now, what did you learn from all of this?"

"Never read a strange flyer aloud."

"Nope. Not that."

Lucy arched a brow. Then it hit her.

"Never summon Aquarius from a fountain."