A/N: The wait is over guys! I'm here again with Chapter 4. This chapter is pretty short, but my brother's baseball games have been keeping me busy. (Also, stupid finals coming up! ugh!) Anyway, I should post Chapter Five pretty soon so enjoy! Thank you everyone who has favorited, followed, read, and reviewed this story!

Review Replies for Chapter 3 (wow! you guys reviewed quick!):

Sairey13: First off, glad you don't think the story is too weird for you ;) Second, I'm not much of a Leorai fan, but every now and then I'll read a fanfic of them being a thing (usually 2003 but sometimes 2012). I am actually kind of curious on your reasoning behind not being a fan. Mine is because Leo is Master Splinter's adopted son and Karai/Miwa is his daughter and I'm not into that sort of thing. Although, in like some 2003 fanfics (even though she kept betraying him in the series!) there have been some cute ones. Again, feel free to tell me your reasons :) Three (and final) Master Splinter's reaction is coming ;) I would explain it but I'm evil and won't reveal any spoilers }:) I'll just say he is hanging in there ;)

Insanity21: I know! Little Leo is sooo cute ;) And, here is your update. Although, there is no real explaining coming in this chapter }:) WHAHAHA! But hope you like this one as well ;) In my opinion, it contains cuteness as well ;)

DP fanboy: Hey! Glad you like it :) and here the chapter you have been waiting for ;) Enjoy!

tmntlover2013: Thank you and here you go ;)

jelsalover2458: Haha! Thank you ;) Yeah, it can be a bit confusing, but just imagine how confusing for the turtles lol. Things should clear up in a bit and if you have any questions and/or are confused, let me know and I'll help out. But, I don't reveal spoilers ;P

Disclaimer: Nope! But I have...um...*looks around room* a spoon from my school cafeteria someone accidentally took and gave to me! Not a lot of people can say they have that! (Don't steal spoons guys, it's not cool...ish)

Donatello's P.O.V (Yes, it's Donnie again, Mikey is next, I promise ;) )

The trip to the Lair seems a lot longer than it usually was. Leo has been looking over my shoulder the entire way. He hasn't made any noises except when we got to the sewers, he gave a small gasp. I think he was just surprised this is where we were going.

I decide to slow down a bit since we are halfway there and I should probably call Sensei and give him a head's up. My breath gets caught in my throat at the thought of Master Splinter. His daughter and son have just came back after about five to six years! I can't picture his reaction once he sees this, especially the new form Leo took. Using my free arm, I get my T-phone and scroll through my contacts until I find Master Splinter with my mind still going in overdrive. After clicking the button, I put my phone to my head to hear the annoying ringing.

I feel Leo shiver against my skin and look over at him in concern. "You alright?" I ask, unable to bring up his name.

He looks at me, with a with wide eyes and a shy look on his face. Was he always this shy? He nods before looking back over my shoulder, ending the discussion. I let out a small sigh and focus on the path ahead of me. I was so focused I almost missed Master Splinter's greeting in Japanese.

"Oh! Hi, Sensei," I say, smacking myself mentally for not hearing him earlier and probably freaking him out a bit.

"Donatello," he starts, and I can hear the nervousness in his voice, "what is wrong, my son?"

"First off, we are fine. As far as I know anyway," I reply, saying the last part under my breath so he hopefully didn't hear. "Mikey and Raph are fighting the Foot and I'm heading back home. There is something I need to tell you before I get home."

"What is it, my son?"

"Karai came back. She's still a mutant, but she's willing to come back to the Lair with us. She's helping Raph and Mikey with the Foot right now and will come home with them when they get a chance."

"Miwa," I hear Sensei breathe out, most likely in surprise or shock.

"That's not it, Sensei. There's more."

There's a pause. "Go on, Donatello."

I took a breath. "She brought someone with her." I pause before continuing. "It's Leonardo."

"Leonardo!" my Sensei says in shock and surprise, but louder than earlier. He obviously wasn't expecting that answer.

Leo looks at me with confusion at the mention of his name. I pretend not to notice him. I definitely did not want to explain this to him right now.

"He's," I pause to think how to word this, "different than what you think he is, Master Splinter. He also doesn't remember life outside of Shredder's Lair."

"Shredder's Lair?"

I sigh. "I'll explain all that I can later, Sensei. I'll be home in a bit."

"I shall wait for your return, my son," he says in understanding.

"See you soon," I say before I hang up.

"I never had a life outside of the room."

I turn to Leo with a look of surprise. This is the first time he has spoken to me this whole trip. I truthfully wasn't expecting him to say anything until Karai met up with us again.

"W-w-what?" I stutter. I already forgot what he just said.

"You said I don't remember life before I was in the room," he says again in a small voice. "I never had a life before that. Mommy said I was born there. The Sharp Man took me there and gave me to Mommy when I was a born."

I'm not sure how to respond. I know he is my brother and he was definitely not born there, but I don't think now would be the best time to bring that up.

"Do you know who your real mommy is?" I decide to ask, wanting to know all he knew.

"Karai is my Mommy," he says, with an angry tone to his voice. His face softens up in seconds. "But I don't know who had me first. The Sharp Man said I was a mistake with some stuff the Smart Man had."

I stop and look at him. I look into his blue eyes until he looks away and back towards the way we came. I open my mouth to say something before an idea comes into my mind. My plan reminded me something Master Splinter would do. I sit Leo down and get down to his level. I gently turn him so we face each other.

"Leo, do you think I am a mistake?"

His eyes widen at my question and shakes his head. "No! Mommy says you help people and are nice; and, you aren't friends with the Bad Men."

"Okay. How are you and me different?"

He looks me over a bit, thinking. "You're taller."

I laugh lightly at his answer. "Okay, besides the fact that I'm older than you."

He opens his mouth to answer again but I interrupt him.

"And that I have a purple bandanna, or you have a blue band on your wrist, or I have gear on and you don't."

He chuckles at that and the smile on my face grows. I realize I'm starting to warm up to this new form of my brother.

"We aren't different. And if I'm not a mistake, then you are not a mistake either," I say, lightly poking him in the chest.

He thinks about this for a few minutes before smiling at me and gives me a nod. "Okay."

"Come on," I say, picking him back up again. "We need to get you to the Lair."

He puts his head on my shoulder and looks over my shoulder. He isn't as tense as he was earlier and I couldn't help but smile at how he has become more comfortable with me.

Again, sorry it is short. I will try to put up Chapter 5 up soon. It's in Mikey's P.O.V and I'm not very good at doing him or fight scenes (hint hint) but I will do my best for you guys ;) If you have any questions or anything, let me know and please review.