There,

On my bed,

We're two really fit guys,

And they were NAKED!

"W-who are y-you?" I asked.
"Master Lushe~" yelled Natsu, grabbing my foot and hugging it. Gray just looked shocked. I felt my face fluster.
"M-Master Lucy, umm," Gray began, "We're your kittens." Kittens? They're clearly human.
"Prove it to me then." I said. In an instant Gray disappeared in a cloud of smoke, and in his place was the same grey kitten I'd seen before. He then transformed back to a human.

"O-okay, just please put some clothes on." I said.
"What are clothes?" Natsu asked. "Oh, do you mean these." He pulled on my skirt.
"Y-yes." I replied, releasing his grip.
"YAYY! We get to wear clothes like master!" He yelled.

I was glad that my ex-boyfriend Sting left some of his clothes here. I gave them to the boys and Gray got dressed. Natsu however, needed help like a child. I swear, this was so awkward.
"Lushe~ that tickles!" Natsu purred. He couldn't make it any more awkward could he?

"Master Lucy~" Gray purred. "Do I get a reward for doing it myself?" What do I give him?
"Yeah, okay." So I ruffled and stroked his hair, which he seemed to enjoy. I saw Natsu and he had a dark aura around him. Someone's jealous.
"GRAY! IT'S MY TURN!" He yelled.
"No way!" Gray yelled back. Then they started fighting each other.

"H-hey!" I said, but they ignored me.
"HEY! STOP THAT!" I yelled. Suddenly they both stopped and stared at me.
"Master Lushe is scary." Natsu whispered, earning a nudge off Gray.
"Do not fight." I ordered. "You'll break something."
"Yes Master Lucy/Lushe." They said back.

//////////////////

Upon closer inspection I noticed that Gray and Natsu both had cat ears as well as their human ones, they had a tail and a collar in their human form too. Natsu was very upfront and loved human contact, whereas Gray seemed more shy, and in that respect, more intelligent.

Natsu didn't have a care in the world, he loved to play with my slipper and he would lie on my lap, but Gray seemed agitated for some reason. He wouldn't relax properly.

"Hey, Gray. Are you alright?" I asked. He looked at me, scared.
"I've just got something on my mind." He mumbled.
"What is it?" I asked sweetly.
"I don't know where we're going to go when you kick us out." He explained.
"Kick you out?" I asked. "Why would I do that?" His eyes suddenly lit up.
"Does that mean you're not kicking us out?" He asked.
"You two are staying here." I smiled. At that Natsu and Gray tackled me to the floor, hugging me tightly.
"YAYAYA!" They both yelled.