At the guild
"Gate of the Water Bearer, I open thee! Aquarius!" Aquarius appeared and sneered "What did I tell you, girl! Don't summon me from a cup!"
"Sorry!" Lucy shouted looking scared.
"So what are you going to use Natsu for?" Lucy asked, smiling a bit.
"This." She said. Natsu's body started to glow gold before a bright light appeared blinding everyone except Aquarius. After the light died out, standing there was Natsu but instead of legs, he had a pink tail.
"What happened to me! Why am I a mermaid!" Natsu panicked unaware of the squealing girls and the FT group having nosebleeds and chuckling like a perverted old man.
"Simple. I turned you into a mermaid. Now, you have to sing Part of Your World from the Little Mermaid." She said smirking.
"Eeeeehhhhhh! Why me!" Natsu shouted, crying anime tears. Everyone fell down and almost fainted. How can he be so cute!?
"Do it Natsu or else," Erza shouted menacingly, managing to force down her blush. She wanted to see him do it too.
"Fine." Natsu grabbed a microphone and the music started to play. He started to sing.

After the song

Everyone was frozen. They were speechless. Who knew Natsu could sing. His voice was so alluring and he fitted the role so perfectly. The way his tail sparkle in the spotlight and his smile reaching out to you. One by one everybody started to clap like crazy! They made so much noise that Magnolia could hear it.
"Amazing!"
"You're the man!"
"Beautiful!"
"Encore!"
"SILENT, YOU BRATS!" The master shouted.
"Natsu, why didn't you tell us you could sing!?"
"I didn't want to deal with this that's why" Natsu said gesturing to the rest of the guild who were squealing loudly and barely restraining themselves. The master sweatdropped at the sight and said: "I see what you mean and your appearance doesn't help." He saw Natsu sulking at a corner drawing circles with a depressing cloud above his head. Natsu was whispering repeatedly "Why me." His pride crushed to dust. Aquarius snickered and shouted "Natsu!" She caught everybody's attention. "Look." Natsu saw that he was glowing again. "Am I going back to normal?" Natsu asked hopefully. "Nope!" Aquarius said popping the 'p'. He was downcast but planned to at least have some pride left at the end of the day. The light shown again, blinding everyone again. Standing there was Natsu in Elsa's dress but in pink and with her hair style. The slit on the dress showed his slender legs. In other words, he looked stunning.
"What the hell!" Natsu shouted surprised.
Almost everyone had nosebleeds. The girls were surprised and a bit jealous that Natsu looked so sexy, beautiful and cute in that dress.
"SO BEAUTIFUL!" Everyone shouted, with hearts popping out of their eyes.
Natsu quickly ran behind Aquarius shouting "Save me! PLEASE!"
"Tch. Fine." Aquarius said annoyed but internally smirking and cackling.
"Stop or else I'm going to wash you all away and you won't hear him sing Let It Go from Frozen." Everyone froze. They are not going to lose one time opportunity. Everyone took their seat with a calm look but their eyes betrayed them. "Now sing or else I'll make you stay in that outfit till the next spirit comes." Aquarius threatened. Natsu immediately got on stage and the music started to play. He started to sing.

After the song

Everyone cheered and the FT group were having nosebleeds and were cheering the loudest. Natsu blushed scarlet and immediately ran to Aquarius and shouted "Change me back now. I've done what you asked me to do. This is embarrassing."
"Fine." A mischievous glint in her eyes made him scared. Natsu started to glow again and when the light faded, Natsu was wearing Megara's dress but in dark pink with her hair style.
"You have to sing one more song I Won't Say I'm In Love from Hercules. After that, you can stop." Aquarius said smirking like mad. Natsu grumbled swearing multiple curses. He started to sing.

After the song

Everyone again cheered very loudly. "Finally!" Natsu shouted happily, unaware that Aquarius was taping the whole thing. "Bye, brat. Thanks." Aquarius said staring at Natsu with a mischievous glint shining in her eyes.
'Shit!' Natsu panicked. Aquarius disappeared back to the spirit world, ready to show her fellow spirits the tape. Natsu glowed and when it faded away, he was in a white sundress with sakura petals flowing down the dress. He wore the same heels but it was in white. His hair was waist length and was tied into a braid. He had a headband in his hair. Almost everyone had hearts in their eyes and blood started to drip from noses. "KAWAIIIII!" Everyone shouted at the top of their lungs. Natsu started to back away from them and ran to the safest place which was Makarov. He whispered "Hide me, please. I won't destroy anything in a month if you help." Makarov was sold at the 'won't destroy'. He grew into his titan form and hid Natsu behind his back and shouted "Calm down, brats! You're scaring Natsu out!" That snapped them out of their trance and saw Natsu looking at them, a bit afraid. Immediately they went back to their seat but their eyes were in hearts. "Alright." He shrank down back to his tiny size. Natsu muttered, "Why am I wearing this dress?" As if on cue, Aquarius appeared smiling evilly and said "Like the new look. You also can't cut your hair anyone unless another spirit decides to change it. Bye." Before anyone could say anything, she disappeared. "Damn you!" Natsu shouted pissed. Wendy walked towards to Natsu with concern shining in her eyes and asked: "Are you okay, Natsu-nii san?" Natsu's mood when an 180-degree turn, scaring the hell out of some people. He smiled warmly at her causing some people (cough * FT group * cough) to chuckle like a pervert while putting tissues in their noses."Nah. I'm just a bit angry. It will go away soon. Thanks for worrying about me." Natsu hugged Wendy drawing some 'awws' from the girls. He went to the bar oblivious to the stares and sat on the stool thinking 'I hope that it's not humiliating.'