So i know there are a lot of stories already where one turtle doesn't grow up with the rest (And if you know some, feel free to recommend ^^) But this idea was stuck in my head for quite some time so i decided to just post it :) Hope it's good.

"Come out, come out, wherever you are. Don't be a scaredy cat!" Annie, the Dark Child

TMNT

You know there are moments in life you just feel something is missing. Everything is present, your family, your home, your friends but at the same time you feel like something is missing. Like something isn't right and there is this empty space to fill.

That's exactly how the three brothers felt. There was always something that would tell them something was missing. It wasn't even something concrete, it was just a weird feeling that would sometimes come up.

Leonardo was the oldest of the three brothers. He was the one wearing the blue bandana and he fought with the twin katana's. He was the leader of the team and the most responsible one.

Raphael was the second oldest and he was the hot head of the family. He wore a red bandana and he fought with the twin sais.

Donatello was the youngest although he was the tallest of the brothers. He was the smartest of the family and he was wearing a purple bandana. He fought with the bo staff.

But there was always a gaping space in the middle of the family. Something who would make them smile. Something who would keep Leonardo away from training, could calm Raphael down and could keep Donatello from his lab.

Splinter, better known as Hamato Yoshi before he was mutated, felt the tension in their family, and his mind kept wandering to the day he found his 3 mutated sons. And he just couldn't forget how he used to buy 4 turtles. And until this day he didn't know what has happened to the last one. It was like the fourth one had just disappeared.

Hamato Yoshi was walking down the streets. A giant jar was in his hands with four little turtle pets in it. He smiled at them. The loss of his beloved Tang Shen and Miwa still in his mind. Suddenly a strange man bumped into him. He glanced over to the man. Something wasn't right… he was acting very weird. Yoshi decided to follow him and without him noticing he walked into the alley.

The man he bumped into was receiving some kind of strange canister of ooze with another one who looked exactly like him. Yoshi frowned slightly and wondered what the ooze was.

He did another silent step, trying to get closer to the conversation when he suddenly stepped onto a rat. The rat shrieked as hard as he could and therefore gave away Yoshi's location. The 2 strange man turned towards him.

"Don't no further, this place is a place where you are not allowed to be in this place. We have been seeing you in this place so this is not the place that will be left by you" 4 men were slowly encircling him. And before he even knew a fight had broken out. He punched the strange guys and hit the one with the canister.

It came flying and it shattered on the ground. Yoshi screamed when he came in contact with the ooze. It burned and he dropped the jar holding the turtles. The turtles began to grow in size, a few blood spatters mixed with the green ooze.

Fascinated by his new form Splinter charged in on the remaining 2. He was faster, stronger and all of his senses were improved. He punched one in the face before tumbling over his own tail and he fell to the ground, face down.

He scrawled to his feet and looked over to the sound of crying. The four turtles he had bought were now humanoid turtles and were crying, the only thing was, there were only 3. He was punched hard across the face and he landed next to the 3 turtles.

"Don't be afraid" Splinter hurriedly whispered and scooped the crying turtles up and ran.

And from that day he had always wondered where the fourth one was. He had never told his sons. They would be devastated by the news they could probably have another brother. One that would fill the empty feeling in their hearts. He just couldn't bear to tell them. He had lost a child once, twice. He didn't want them to go through the same.

He sighed slightly and stood up from his mediation sit and walked over to the picture of his old family. His daughter Miwa and his beloved Tang Shen. And of course Hamato Yoshi, when he was still human. Next to the picture was a piece of glass. As a reminder of his fallen son, Michelangelo.

He had named his sons after his favorite renaissance painters. Leonardo for the oldest, Raphael for the second oldest and Donatello for the youngest. And without his sons knowing he had named their fallen brother too. Michelangelo. Which meant What is of god. He closed his eyes. He knew his son was in a better place now.

TMNT

"I thought we were friends" A young turtle whispered and began to cough slightly. His hands and legs were bound together above his little shell.

"You actually believed someone like me could be friend with a freak like you?" Bradford, his presumed friend, laughed and turned towards Xever.

"I say we get rid of him" Xever smirked and walked over to the sword on the wall. The little turtle gulped in fear and a single tear escaped his eye. How could he ever be so stupid to fall for this? Humans never accepted him, for one exception.

"Nothing would make me happier, but we need him. All part of the plan" Bradford smirked and showed the letter to Xever.

TMNT

"Guys!" April screamed and ran into the lair. Leo and Donnie both looked up at the terrified voice of their only human friend. April was holding a letter and was panting heavily. "Where is Raphael?!" She practically screamed. Whatever was in that letter had to be bad.

"Right here. What's wrong?" Raph shrugged and sat down next to his brothers on the cough. April's eyes widened in disbelieve when he saw her three friends sitting on the couch, completely unharmed.

"April what is wrong?" Donnie asked trailed his eyes towards the letter in her hand. "What is in the letter?"

With shaky hands April handed Donnie the paper. Donnie frowned and grabbed the letter gently before opening it. His frown grew more intense the more he read it.

"What is in it Don?" Leo insisted and scrawled closer to his youngest brother. With the same shaky fingers Donnie gave Leo the letter. Leo frowned too and trailed his eyes towards the letter.

Hello turtles,

I got one of you brothers, if you want to see him alive, meet me at my dojo tonight

Bradford

"We're all here" Raph suggested and sighed in annoyance. Why would Bradford lie about this? He couldn't be so stupid to think they would rush in right? They weren't stupid. They were all here so why would he even try? "We ain't that stupid"

"Guys, there is more" April obligated and gave the three brothers a picture that was included with the letter. All three of them gasped. There, bound on the ground, partly hidden in the shadows was a small turtle. They all looked at each other, could there be another one?

So what do you think?