Michelangelo was the one that found the poor thing, wrapped in that dirty threadbare blanket, shivering and whimpering in the soaked cardboard box. He was a bit reluctant to approach it at first, but the thing inside the box started to cry. That was a baby, no doubt about it. He moved forward cautiously, peering into the box, curiosity etched on his face. Yes, a baby, but that wasn't all. A baby mutant turtle. What were the odds of that?

Mikey debated whether or not to take her to the lair, but his young mind could only think was mutant turtle! mutant turtle! What would Leo do? Leo was clever (as was Donnie). Leo would know what to do.

Mikey put himself in Leo's shell. After a long-ish moment of trying. His older brother wasn't much of a party-goer, and pretending to be Leo, or thinking like him depressed Mikey.

Master Splinter.

Get him and bring him here? Or take the box to Sensei?

Michelangelo's young, curious blue eyes swiveled back to the infant as he started crying. Take him to Splinter. Mikey moved closer and gingerly picked the box up. The baby was startled at the sudden movement and started to cry harder. The crying gave Mikey a headache, but he wasn't Raph. He wouldn't shout at the infant.

Back at the lair, his brothers crowded round him.

"Mikey, where did you-?"

"Don't bring it near me!"

"Let me look!"

"My sons! What is going on?" Master Splinter walked out of his room, moving his walking stick with every other step. "Michelangelo? What have you got there?"

"Baby turtle, Sensei." Mikey said innocently, showing his father who and what lay in the box. The baby had fallen silent at the sudden commotion and noise from his brothers. The poor thing looked frightened and if he may start crying again.

Master Splinter studied the baby turtle, suspiciously and curiously. After a short while, he carefully lifted the infant from the box, freeing him from the damp, thin blanket.

"Can we keep him? Sensei, please?" Michelangelo looked at his father with big, round, pleading eyes. His brothers watched patiently.

"Him? Why, Michelangelo, if I am not wrong, this infant is a girl." The shock on his sons' faces were priceless. Leonardo was the first to pull himself together.

"Can we keep her then, please Master Splinter?" Master Splinter looked down at the child in his arms. She seemed quite comfortable, curled up, clearly trying to get warm.

"And leave a poor, innocent child all alone in the sewers? Certainly, we shall keep her, my sons." Grins spread across their faces, although there was a bit of uncertainty in Raphael's eyes. "It is alright, Raphael. I am sure she does not bite." Master Splinter smiled kindly.

"Can I name her, Sensei?" Michelangelo asked. "I was the one who found her." He smiled innocently. His brothers protested instantly.

"You four can agree on a name. If you haven't by the end of the day, I will choose one for her." The four looked at each other, before suggesting various names. Master Splinter decided to leave them be while he tended to the hungry infant.

Master Splinter was sitting quite comfortably on the couch, the young girl curled up, asleep on his lap, with a warm blanket over her. His sons couldn't choose between 'Rose', 'Alex', 'Daisy' or 'Rainie'.

"Why name her after a stinkin' flower?" Raphael argued. "Alex is a cool name."

"Alex is a boy's name." Leonardo retorted.

"Is not!" Raphael clenched his fists.

"It can be a girl and boy's name." Donatello said helpfully. "But Daisy is a nice name."

"It's a flower. Flowers are borin'." Raphael said irritably.

"Some flowers and other plants are used for science, such as medicines."

"Yeah, but daisies are common flowers, Don." Leonardo pointed out.

"Yeah, but what about Rainie?" Michelangelo spoke up. "Rainie isn't a flower or a boy's name. I think it suits her." His brothers stared at him. "What?" He asked, a slight hint of a protest in his voice. "I'm just saying..."

"Master Splinter, what do you think?" Leonardo asked.

"I think you have ten minutes before I choose the name." His sons looked at each other, a slight tension of competition in the air. "But choose nicely, my sons. No fighting, please."

"Yes, Sensei." They said respectfully. They bickered for most of the ten minutes, when Donatello decided that 'Daisy' was a boring flower name after all. Leonardo agreed and dropped the suggestion of 'Rose'. That left Michelangelo and Raphael to quarrel over 'Rainie' and 'Alex'.

"Why don't you flip a coin?" Leonardo asked, Master Splinter indicating that they had a minute left.

"You got a coin?" Raphael countered.

"Not on me." Leonardo replied bluntly. "I'll get one, hang on." Leonardo dashed into his room and returned a few seconds later, a quarter held in his fist. "OK, Mikey, heads- Raph, tails."

"Why can't it be 'shell'?" Mikey asked quietly as his brother flipped the coin. Leonardo covered the coin with his hand, leaving his younger brothers in suspense. "Leo, tell! Pleeeasssee!" Michelangelo pulled on his arm. Leonardo grinned mischievously, moving his hand. Heads. "Ha! Rainie it is!" Mikey pointed at Raph, triumphant. Raphael glowered at him.

Michelangelo bounced over to Master Splinter, grinning cheekily. "Is she our sister now?" He asked, looking from the baby to Master Splinter.

"Yes, Michelangelo. Your sister... Rainie." Master Splinter smiled.