Disclaimer: I own nothing.

An: Rewritten. Plot slightly change. Hopefully, it's way better.

Warning: English is not my first language, so please forgive me if there's any mistakes grammar or spelling wise. I'll try to catch as many as I can. If anyone points out any mistakes, I will try to fix them.

Summary:Usagi turns into a cat and gets adopted by the gundam boys.

Cat for a Week

Prologue

There were times when Luna felt more like a babysitter than a guardian.

"Rei, that's my chocolate chip cookie!"

She was overworked.

"Hm? That's funny, I don't see your name on it anywhere."

Underpaid.

"I called dibs on it!"

Underappreciated.

"Dibs! What are you, five? You! You! You, Odango!"

And in need of a vacation.

"No! Don't!"

Luna sighed as she watched Rei shoved the last cookie into her mouth with a triumphant grin. As Usagi launch herself across the bed, Luna wondered whether Usagi knew or cared that she was being baited. Or did Usagi react out of habit? It was hard to tell and as time passed Luna finds that it just gets harder and harder to understand Usagi.

It use to be so easy to read her ward.

In the past, her charge didn't think of anything beyond the next hot meal or the next hot boy. Luna could always count on Usagi to be uncomplicated and simple. The way Usagi was so open with her feelings (especially when someone like Rei riled her up) was soothing in a way. There wasn't a dishonest bone in Usagi's body and Luna liked to think that there was nothing on earth that her charge could hide from her. There wasn't a single secret or bruise that she didn't know about. Luna had even made it a point to categorized every scar and every wound Usagi and the senshi got in battle. She had made a physical tally of it; a papered IOU list of debts she owed each girl for every ache and pain they went through because she had been the one who had unwillingly dragged them into this war.

When Usagi found the list, hidden underneath the bed, Luna had been stunned when Usagi shredded the papers without another thought.

"Oops. Was that important?" Usagi asked with wide eyes.

It was in that one moment Luna suddenly realized that she hadn't been keeping a close enough eye on Usagi. Feeling a sliver of something she couldn't place a paw on, she began watching Usagi with more scrutiny.

Usagi has always been clumsy. But that clumsy seem to take on more meaning when it distracted the senshi from their brooding thoughts when they failed to save a soul from the Youma.

Usagi still complains a lot. Her habit of blowing off homework and skipping lessons still exasperated Luna beyond belief. She has a hypochondriac personality and her ability to change moods with the blink of an eye made Luna cringed. But even when Usagi trembled and whispered with a loud breath about how they should be running away, Usagi has always run towards battle instead of away from it. Usagi complained about the little splinter she got in the last battle, but kept silent about her broken rib. Usagi can be a bit spoiled and a little self-centered. She wails when she doesn't get her way. At the same time Usagi was also selfless and always thinking of others. She was as self-absorb as she is self-sacrificing. The mess of contradictions that came from her charge threw Luna off-balanced.

Luna studied the other senshi even more closely since she noticed the change in Usagi.

She sees how often Makoto's eyes would dart to scan their surroundings and how Minako always kept one hand in her pocket; fingertip always touching her transformation pen. She had noticed the bags underneath Ami's eyes growing more prominent as time went by because the girl did more than her fair share, watching the scanner every night diligently, making sure that everyone was safe. And, even though Rei would deny it to the very last breath, Luna was even aware that Rei often snuck out of the temple at night to check on the other senshi and scout the city. The presence that lingered outside Usagi's window was never hidden. Luna had never been sure if she should feel exasperated or amused that Usagi had never sense Rei. The senshi had a lot of ingrain habits that Luna was fully aware of. It was nothing she didn't know before. Luna honestly didn't couldn't find anything unusual in the way the girls behaved.

The only changes were in Usagi.

It perplexed her.

Luna wondered if she even knew her charge at all as she watched the two girl fall into an undignified heap on Rei's carpet floor, barely missing the dresser. They wrestle with each other, uncaring of the rolling eyes watching them. Only when Makoto and Minako pried them apart did they settle down; Usagi with a sad little slump at losing her snack and Rei with a little smile twitching at her lips. Usagi's depressed mood shifted when Rei offered her a pudding cup and Luna shook her head.

She was still pondering on Usagi later that night as she stared at the moon from Usagi's bedroom window.

"Can't sleep?" A ruffled Usagi sat up in bed. There was a thoughtful look on her face as she carefully watched Luna.

There was something in the way Usagi held herself right now, with her arms wrapped around her legs and head tilted to one side…it left Luna motionless. There was quiet grace around her charge. There was something in the way that Usagi patiently waited for Luna to speak that left Luna staring in wonder.

She didn't know this Usagi.

Sleep fled Luna's mind and she suddenly wanted to know this stranger with the pensive look, who looked so much like her ward.

"No. I couldn't sleep," Luna said. She laid herself on Usagi's desk with her paws tucked under her body. "You?"

"Not really," Usagi shrugged. In the moonlight her loose hair turned silver. It reminded Luna agonizingly of Queen Serenity. Luna tried to squashed down the memories as she felt her face contorted. What a time to get homesick. Luna wearily hoped Usagi wouldn't notice.

"Luna?" A soft voice questioned. The compassionate look thrown her way proved that Usagi had notice the change in expression. This sharp, perceptive Usagi finally confirmed what Luna had begun to suspect for the last few months.

Somewhere, without her noticing, Usagi had grown up.

"Do you want to talk about it?" Usagi asked quietly. She had gotten out of bed and had taken the chair by her desk. A hand went to rub Luna's back. "I promise I'll be quiet."

Luna and Usagi exchanged looks.

They unceremoniously burst out laughing together.

Luna wiped the tears of mirth from her eyes as Usagi tried to stiffen her giggles. She allowed herself to be comforted by the feeling of Usagi's gentle hand on her fur.

The feeling of loss she felt when she realized that she had missed Usagi's growing up faded slightly. The girl beside her was still her charge. Older and wiser, but still kind and compassionate and with the extraordinary ability to lift up any spirits, no matter how low in the dump.

Luna felt an overwhelming surge of affection for Usagi as she laid there.

"You can tell me anything," Usagi said after a few moments of silence. " You know that right?"

Usagi's blue eyes looked sincere.

"Yes, I know."

They fell into a quiet, sync rhythm; Luna watching the moon and purring when Usagi hit just the right spot and Usagi looking at Luna with an indescribable stare. Just what was Usagi thinking behind those eyes? Luna use to know. She quietly added it on her mental list of things she was going to miss...her ability to read Usagi.

"I'm sorry," Usagi said suddenly. Her voice was so regretful it hurt to listen to it. "I'm sorry we haven't found the princess yet."

Luna was caught off guard at the apology.

"We will," Luna nodded her head slowly. She patted Usagi's hand reassuringly.

"Still…I'm sorry," Usagi looked mournful. "I know how badly you want to find her. She's the only thing you have left of home." Usagi's hand waved in the general direction of the moon. "I'm-I'm sorry."

Luna couldn't find her voice for a long moment. She watched as Usagi's shoulders slumped in disappointment. The leader of the senshi looked on the verge of tears. Not the wailing, childish sort of tears that often came with whining or a tantrum, but with the heartbreaking tears of seeing a love one hurt and unable to help.

Luna swallowed back her own tears as her eyes watered. When she was able to speak again, she found herself spilling out what she remembered of the Moon Kingdom. After so long of keeping silent, hiding the pain and hurt, it felt freeing to share it with someone.

To share it with Usagi.

She didn't have a lot of memories. Most of what she remembered involved the attack that had destroyed the kingdom. Luna remembered those in vivid detail; the screams, the flames, the smoke, and the panic. The worst was the image of Queen Serenity's back as she ran to launch one final assault.

Mixed in, somewhat more disjointed and blurred, were the sensation of memories.

Luna remembered the smell of the garden, even though she couldn't remember what it looked like. She remembered the sound of soft, cheerful laughter of the crowds around the palace. She could even still feel the soft caress of fabric against her skin.

The feeling of homesickness was there again, lingering in her thoughts as she talked. But it lacked the bitter edge that usually came with it. Maybe it was the way Usagi listened to every word, sharing the pain whenever Luna felt her voice choked.

What she missed most of all was walking on two legs. Two human legs.

"I wasn't always a cat," Luna rolled her eyes as Usagi's jaw dropped.

"Really?" There was a note of awed curiosity in Usagi's voice.

Luna nodded. She may have preened a bit as she describe her human form to Usagi.

About Ami's size and figure. Long, wavy black hair, pale skin, and blue eyes. Graceful.

That last part was added to tease Usagi who rolled her eyes in turn.

Luna missed being human.

She was so lost in her thoughts, she missed the gleam in Usagi's eyes. She should have known that something was up when Usagi fell silent for too long.

With Usagi, compassion often came hand in hand with stupidity.

Luna never realized that Usagi was planning on doing something so totally idiotic. Something so totally Usagi-like. She only noticed that Usagi had stopped petting her. It was too late by the time she turned and saw the silver crystal in Usagi's hand.

"Usagi! No!"

There was a flash of light.

Then darkness.

...

Usagi was the first to wake; her body aching and sore.

When enough of the headache wore off, she bewilderingly noticed that everything was so much larger than she remembered.

No. That wasn't right. Everything was the same size as it was before. She was the one who was smaller.

"Oh," was the only thing she could utter. She stared at her hands, paws now, with a strange mixture of fascination and awe. Then she notice another body lying nearby. A pretty but unconscious girl in yellow, who Usagi was grateful to see was still breathing.

She glanced around her room in shock. Only when her glaze settled on the full length mirror on her door did the full impact of what she'd done hit her.

"That's not what I meant," she whined to herself. When she made that wish for Luna to be human, she hadn't meant for it to turn her into a cat.

Usagi began to pace anxiously.

She was going to be in so much trouble when the others find out. Her over-imaginative mind was already imagining Rei's red face, but... looking at Luna's human face slack in a peaceful slumber, Usagi couldn't find it in herself to regret it.

One week, she thought.

She could give Luna that one week to get back what she missed the most.

The number of Youma attacks were low. Even if something were to happened, Usagi trusted the other senshi to take care of it.

Leaping onto her desk, Usagi with the pen carefully clutched in her mouth, wrote a jagged note on her memo pad.

Will be back in one week. Enjoy.

Knowing that if she was still around, Luna would insist on them turning back to their forms, Usagi decided to make herself scarce.

She took one look back at Luna's prone figure before she vanished out the bedroom window.