This story takes place around the time after Lucy was forced to break Aquarius's key and the young Celestial wizard was still getting over the loss of her dear friend. The others have tried their best to comfort her but it did very little. Even her own boyfriend Natsu had zero luck in calming her down when she went into yet another crying fit.

Sometimes he'd just cradle her in his lap as she cried and cried holding that broken key close to her chest.

"I'm sorry Aquarius! I'm sorry!"

Was all she would say over and over again, and it broke Natsu's heart to see Lucy, the girl he loves so much, so miserable, so heart broken, so...defeated.

Now all he wants is to see her happy again...well maybe now is his chance to do just that...

...

"Ahh Yeah! Now that's what I'm talking about, awesome job everyone!" Natsu cheered as their team had just finished up another job.

This one was to rid a town of a loan shark and his wizard goons who have been terrorizing the residents for months. The wizards were tougher than our heroes had expected but in the end the Fairy Tail wizards were victorious.

But unbeknownst to them they now had a new problem…

Lucy had convinced the others to do a little shopping and sightseeing before heading back home as well as rest for a bit since that fight took a lot out of them. And while each member was separated doing their own thing, Happy spotted it.

"Natsu look!" the flying blue cat pulled at his best friend's scarf

Natsu who had his mouth stuffed with food turned to where his little buddy was pointing and nearly choked when he saw it. Just a few feet behind them stood a young boy around 10 with straight black hair, brown eyes and holding a golden gate key.

No way! It can't be!

But upon taking a closer look their suspicions were proven correct and neither Natsu nor Happy could believe what they were seeing. This young boy indeed was holding...Aquarius's key!

Words could not express how excited they were, after so long of comforting a mourning Lucy who was forced to break the key of her most beloved spirit, the two can finally be reunited.

"Happy this is great just wait till we tell-" Natsu froze as the realization hit him

"She has a new wizard now...and the golden keys are rare...There's no way he's going to give it up that easily." Natsu whispered his voice filled with defeat and sorrow

Happy's smile faded as well until an idea crossed his mind

"But what if we tell him how important Aquarius is Lucy...maybe if we explain what happened and how much she's hurting maybe he might just be kind enough to return her."

"Well I guess it's worth a shot at least it's better than not trying at all." and the two made their way over to the young boy.

Unfortunately their hopes were quickly diminished as they soon found the young boy who is now known as Sillus to be nothing but a spoiled brat.

"Please Aquarius is very important to Lucy, she was a gift from her mother. She's been with her longer than all her other spirits." Natsu pleaded but the boy just laughed

"And that's my problem how?" He crossed his arms grinning at the dragon slayer, the precious key in his left hand.

"Please you don't understand Aquarius means everything to her."

"If it did then your friend wouldn't have lost it's key."

Natsu was a little ticked at how this brat was calling Aquarius an 'it'.

"She didn't lose her, Lucy was forced to break Aquarius's key to save her friends! She didn't want to do it but Aquarius pressured her into it. And it broke her heart to do so, she cried for months on end."

Sillus burst out laughing and Natsu felt the anger build up inside of him.

"Ahahaha! Oh you have got to be kidding me! You're telling me this girl was stupid enough to break a spirit key! And a zodiac one at that! Ahahaha! Oh my God! Your friend has to be the stupidest celestial wizard alive! I mean how dumb do you have to be to break a zodiac key!"

Natsu growled under his breath

"Oh man you really shouldn't have told me that now I'm definitely not giving this key!"

Were you even considering it brat!

Natsu growled then the kid smirked

"Unless, you can give me something in return."

YOU LITTLE BRAT! Natsu internally screamed

"Fine. What do you want?"

Sillus thought for a moment before turning gaze to Happy and a smirk crossed his lips.

"How about that flying cat of yours he'd make a fun pet?"

"LIKE HELL!" Natsu pulled Happy into his arms pressing the cat close to his chest holding onto his little buddy with a death grip.

"And Happy is not a pet! He's my best friend and partner! Keep your paws off him!"

"Ok bye." Sillus turned and began to walk away.

"Wait! Maybe there's something else I can get you." Natsu swallowed his pride as he was now desperate to get that key.

"Please...I-I'll do anything."

"Anything?" Sillus now had a wicked smile on his face

Natsu bowed his head in shame. I have to...no I 'need' to get Aquarius back for Lucy's sake. I can't stand to see her suffer anymore.

"As long as you give us back our friend...yes."

"Alright then for the next week you do everything I tell you to, then and only then I'll give you the key. Deal?"

THIS SPOILED, SELFISH, ENTITLED LITTLE BRAT!

"Sign...Deal."

"Great! Now let's go servant." Sillus turned and walked away, Natsu following close behind.

Great! Now I'm a servant for this brat!...

"I can't believe you're really doing this?" Happy whispered still pressed close to Natsu's chest

"I have to, for Lucy."

And if it means getting Aquarius back and seeing Lucy happy again... a small smile crossed his lips as Natsu imagined Lucy's smiling face upon having her spirit back by her side. Then it's worth dealing with this brat for a week.

No one else would be willing to become a spoiled brat's personal slave but Natsu loves Lucy too much to watch her suffer any longer, he needs to get Aquarius back...for her.