Warning: Not now, but in later chapters, there will be smut and this will eventually turn into a Monarai (Mona LisaxKarai) fanfic. If this is not your favorite pairing, I'm sorry, but I'm trying to go for something off-beat since I usually do tcest. Thanks!

"The things I've done for Raphael…"

Mona continually mumbled to herself as she waited in the med bay for Donatello to finish his inspection. She'd had a rough time, between getting captured by Triceratons, crashing down to Earth, and suffering through the horrendously slow medical inspections. They were incredibly pointless, but her terrapin lover had insisted otherwise, so Mona tried not to complain.

Luckily enough, the Earth had the nitrogen in the atmosphere she needed, as well as an excess of carbon dioxide, both of which were vital for her to breathe.
…Though she did question why the over availability of it.

"Does your arm hurt? Any pain in your ankle? Anywhere?"

"No, Donatello. I'm perfectly fine."

"I know, I know. I'm asking because Raph-"

"I understand. I'll tell him you were thorough." Donnie rubbed the back of his neck sheepishly. "Thank you, Mona. I don't think I'd feel good if I didn't actually finish, though." The alienoid grumbled and muttered curses in her own guttural language.

"Sorry. I know you aren't crazy about this. But, it's better to check, right?" Mona Lisa glared at the olive scaled turtle. "On my planet, we don't have many medical specialists. We believe injury in combat is an honor - scars are kept, bones remain broken, all unless they inhibit fighting ability." 'She's just like Raph. I've got my work cut out for me…'

Meanwhile, Raphael was in the living room, attempting to calm himself as he waited for his brother to finish checking Mona. It made him nervous, thinking about the possible injury his girlfriend could have sustained. He suddenly heard a clang of metal and raced into his little brother's lab, only to see Mona with her arms crossed and Donatello against the wall, presumably having been thrown there. "What did you do, Don?!"

"He took too long in his supposed inspection," Mona answered. Donatello, head still spinning, nodded in confirmation. Having two Raphael-type personalities was not fun. Forgetting his brother for a moment, he walked over to the slate-skinned amphibian. "You okay?"

"Fine, as I said before."

"I'm serious, Mona, you could be hurt, bad." A growling 'rakka rakka' came from the alien, who promptly exited, tugging at the collar of the borrowed shirt. In her previous imprisonment, her weapon and suit had been taken, and though she reclaimed her weapon, her suit had not quite survived the crash landing to Earth unscathed. Raph had borrowed some of Casey's clothes since they fit Mona better than April's. At the moment, she was wearing a black t-shirt with white skull-headed bats and jeans that looked and felt a little uncomfortable. Human clothing did not fit terribly well, even with Mona having stretching them out a few sizes.

Because of that, she slept naked, and though it had made the turtles red in the face the first few times seeing it, they'd gotten used to seeing her without any clothing. Raph followed behind, not pushing the matter any further. Her mood had taken a sharp downhill turn as soon as she had discovered she was stuck on Earth. She didn't like being confined to the sewers and rooftops, wasn't used to stealth travel, hated everything about life on Earth. Everything from the disgusting oily taste of food to the overzealous idiocy of politics. "Mona… I know you aren't comfortable here-"

"Oh? When did you notice that? Twenty slacks ago?" Raphael, thinking this was Mona's version of sarcasm, ignored the comment. "Look. I can see you've hated it here from the first minute. But please don't take it out on my brothers. Or me, for that matter. Why don't we go out?"

"I will not partake in your frivolous earthly courting."

"…That's not what I meant." Later on, Raph was out with Mona, who seemed to be a little less moody now that she was promised a base full of Kraang to wail on. They were following a van going downtown, waiting for it to lead them to a Kraang facility. The vehicle turned sharply down an alley, and the twosome followed after it. After a few inaudible transfers below, a warehouse door opened, allowing the van inside.

The terrapin and salamandrion followed quickly behind. After a short reprieve to gather their plan - or as much of a plan as a couple of brawlers could think of on the spot - they ventured further into the facility. Most of the place seemed to be dedicated to more mutation experiments, since the Kraang had apparently only had so much of the perfected mutagen. And there was something else, too. The strange unknown substance looked a lot like retro mutagen, but it couldn't be.

The Kraang didn't want to unmutate anything, unless that was the new plan for their revenge on the turtles. 'Hopefully it's not what I think it is,' Raph thought as he and Mona made their way through the lab. After a quick gesture, the two climbed up to the rafters and stayed there for a while to get a better idea of their plan. They thought they had it figured out when a loud banging broke the silence. 'It must be the van', thought Raphael. And it was.

The issue was what was inside of it that seemed to want out.