Thanks for all the reviews so far!

I don't own TMNT. And I only Koumori partly.

Raph had never felt so full of anger and rage in all of his life. And never before had he kept it all in for so long. Raph sighed as he gazed up at his bedroom ceiling. He had gone to bed a few hours ago, but he had yet to fall asleep despite his attempts to try. But I guess my heart just hurts too much. Mikey…why did that…that monster decide to kill you, and only you?

Finally, Raph decided that it was pointless to stay in bed if he wasn't going to fall asleep. With another sigh, Raph got out of bedand headed towards the dojo, where his trusty punching bag was waiting for him.

"Shouldn't you get some sleep?" asked a familiar voice. Slightly startled, Raph stopped and looked around. He was currently now in the living room or the main area of the lair, where the couches and the T.V. were. Raph turned his attention to one couch in particular, when Casey Jones was sitting up and looking at him with an unreadable expression.

When Casey finally arrived at the lair soon after the failed retro-mutagen attempt, he tried to comfort Raph and the others, even though everyone could clearly see that his normally brown eyes were a bright red. Then he insisted that he should stay the night so that they, as Casey put it, have a friendly face watching over them tonight.

When Master Splinter told him that he didn't have to do that, Casey just threw his bag on the couch and said that his Father had already given permission and that there was no school tomorrow anyway since it was Saturday. Master Splinter then gave his permission for Casey to stay the night, much to Raph's relief. Casey was his best friend after all and the idea of him staying the night made the lair not seem not so empty.

"I tried, but I can't," Raph answered as he continued his journey to his punching bag.

"I thought as much as," replied Casey behind him. When Raph finally reached his punching bag, he immediately sent some, but not all, of his rage into his plummeting fist. His punch sent the bag backwards high into the air before it rocketed back straight to Raph, only to have the angry turtle hit it really hard again.

"You just angry at those murderers right? Not at the kid?" This question startled Raph so much that he stopped hitting the bag and looked at Casey, who was standing a safe and respectable distance away from the red-masked turtle.

"What?" asked Raph right as he stopped the punching bag from colliding with him hard with one hand.

"I mean, you probably are, but I couldn't help but notice that you seemed a bit angry when Koumori talked to you," continued Casey. Raph sighed at the memory. Right after Casey arrived and they explained the Koumori situation to him, they all talked about what they should do. After some discussion, they concluded that even though Koumori could switch between forms like Karai's, Koumori's mind was not in danger of slipping away.

April then volunteered to take Koumori home with her, and perhaps she and her Father could find his picture in the missing child list. Master Splinter agreed, and though he didn't say it, Raph knew that he didn't want such a 'positive and innocent' child to be in a place full of sadness. Raph was perfectly fine with this plan, but then just before April and Koumori left, Koumori told him that he really liked his sai.

It was just a simple compliment, but for some reason, Raph's blood boiled at it. He didn't know whether it was because he was reminded of the fact that his sai had failed to protect Mikey. Or maybe it was seeing the bright and curious look in Koumori's eyes, the same look Mikey used to have in his own eyes. Or maybe it was because Raph was reminded of when Master Splinter hugged the little boy tightly, like Koumori was one of his own sons and that Mikey hadn't just died.

"I'm…not angry at him," answered Raph, though he knew that deep down he was probably lying. "I only replied slightly angrily because I…was having trouble holding in my anger at the murderer." Casey gave him an inquisitive look, like he knew that Raph was lying but wasn't sure. But then to Raph's relief, Casey just shook his head a little bit, like he was giving up on trying to read Raph's soul.

"Okay…then in that case, why don't we track down that monster right now and make him pay? I mean, it's not like you're sleeping anyway," asked Casey. Before Raph's mind could fully comprehend those words, Raph's heart agreed. Ever since Raph was forced to let that man with the sunglasses go, Raph had been saving up his rage for the time where he would surely meet him again. The time where he would have his total revenge.

"What happened to having a friendly face to watch over us tonight?" asked Raph with a slight smile.

"Hey, so says I'm not going to watch over you tonight as we track down that bad guy," replied Casey. "Besides, ever since you…told me, I've been planning to hunt him down. Even if I had to go alone."

"And what made you think that I would let you hunt him down alone? Mikey is…was my brother," asked Raph as he walked towards his best friend.

"Oh, I was just prepared to just in case you were against the idea of revenge," answered Casey.

"Master Splinter would be, and maybe Leo and Donnie as well. But not me. And I never will be against the idea of at least greatly hurting the man who killed my baby brother," said Raph as he offered his right hand and arm to Casey.

"And my really good friend," said Casey as he took Raph's offer with his left hand and arm. Raph nodded as he and Casey cemented the deal by pumping their joined hands slightly up and down. Master Splinter won't be pleased and Leo won't be happy that just Casey and I went after him, but the less time that sunglasses man gets to walk free, the better.

Then, out of the corner of his eye, Raph saw him. Surprised, Raph turned his full attention to the dojo entrance and saw that he did indeed see Donnie there. His now only younger brother was just standing there, completely silent but wearing an expression so full of grief and pain that it hurt Raph just to look at him.

"Donnie…" Raph said softly as he let of Casey's hand and brought his arm to his side. Did he hear us?

"Can't go to sleep either?" asked Casey, his voice full of concern. Donnie nodded before he walked to Raph and laid his olive-green hand on Raph's kelly-green arm. Raph didn't know what message Donnie was trying to portray until he saw the pleading look in Donnie's eyes.

"You heard didn't you? And you don't want me to go?" Raph asked. Donnie nodded his head very firmly, fear that Raph would still go anyway in his eyes. Raph immediately felt conflicted. He still wanted to inflict his harsh and furious revenge on the sunglasses man as soon as possible.

But as he looked into his dear younger brother's eyes, he knew he would feel great guilt if he left him now. Especially since he now knew the reason why Donnie wasn't talking. Raph sighed as the memory when they realized why played through his mind like a recorded movie.

TMNT

After April and Koumori left the lair to go to April's home, Master Splinter turned to Donnie.

"Donatello…you haven't spoken once during our discussion. What is wrong my son?" their Father asked. Instead of answering, Donnie just gave a pained expression and looked at the ground.

"Donnie, it's okay. Just let the words out," supported Leo as he laid his hand on his now youngest brother's shoulder. Donnie responded to this by just staring at the ground.

"Dude, you need to let them out," added Casey.

"Yeah, I mean, you haven't spoken since…" Raph started to say when he suddenly realized with shock that the last time Donnie uttered words was right before Mikey was horribly taken from them. Leo then gasped, signaling to Raph that Leo just realized this too.

"Oh no," said Leo, his soft voice full of fear. "Donnie…your voice isn't gone is it?" Donnie didn't respond, which made Raph's own fear grow even greater.

"What?! How can his voice be suddenly gone?!" exclaimed Casey, anxiety in his voice. Raph's imagination then went haywire and came up with two possible solutions. One was that Donnie permanently blew out his voice when he started to scream and wail when Mikey died. The other one was that when Mikey's body disappeared in Donnie's arms, it somehow affected Donnie's voice for the worse. Unable to take his fear and anxiety anymore, Raph rushed to Donnie and grabbed him by the shoulders.

"Your voice is just exhausted from crying right? So you're just letting it rest and will be able to talk tomorrow? Right? "Right?! Answer me Donnie! Please!" exclaimed Raph as he shook Donnie back and forth.

"Raph stop!" exclaimed Leo as he separated the unresponsive Donnie and the extremely fearful Raph. Leo, the mother hen that he was, took Donnie into his arms while Master Splinter took Raph into his own arms.

"Please for the love of Pete say something! Anything!" cried Raph as he struggled to get out of his Father's arms, but to no avail. When Donnie again failed to respond in spoken word, Raph felt his world break even further. The person who was in charge of the universe already took his dear baby brother away, and how it seemed that he had taken one of his remaining brothers' voice as well.

"Calm down Raphael! Donatello's voice isn't gone!" exclaimed Master Splinter.

"What?" asked Leo, hope in his voice as Raph suddenly stopped struggling in Sensei's arms.

"Then how come he isn't talking?" asked Casey.

"Because he is traumatized. And sometimes, a person can become so traumatized that they are just too afraid to talk," explained Master Splinter. No one talked for a moment, letting this new information sink in.

"Then…when will Donnie talk again?" asked Leo.

"I don't know. When he is ready," replied Master Splinter.

TMNT

When Master Splinter had told them that, Raph felt a mixture of relief, anger, and sadness. Relief for knowing that he will indeed hear his brother's voice again. Sadness for not knowing when Donnie will speak again. Anger towards the man that had caused Donnie to be traumatized like this. But…I guess I just have to hold in that anger just a bit longer.

"Alright, I won't go," Raphael said finally. At least not tonight. "C'mon, bro. Want to sleep with me tonight?" When Donnie nodded in this rare form of Raph's affection, Raph took Donnie's hand and led him out of the dojo.

"Thanks anyway Casey," he said as they passed the black-haired teenager.

"No problem. Night dudes," replied Casey, staying put where he was.

"Night," Raph replied back as he and Donnie left the dojo and towards Raph's room. Don't worry Mikey. I will take care of Donnie and Leo till my dying day. And I swear, I will avenge you and Donnie, even if I lose my life in the process.

Oh gosh...poor Donnie...and Casey, you are a good friend. I will update in a few days (hopefully) and till then, please leave a review so I know how well/badly I am doing. Have a good night/day!