What is this?

Mikey couldn't take it anymore. When everything got to much for him he sometimes started hiding in a mask of happiness to keep being like he always was. It's no wonder his brothers didn't notice a thing. Lately he's been putting up his mask more and more. But now... He can't take it off anymore. He's become a fake, a liar, an empty version of who he used to be while the his real self is locked inside. How will Mikey take back control? How will he stop hiding in his mask? And what was he gonna do now that every body else starts to notice somethings off?

And what was that voice in his mind?

I DO NOT OWN TEENAGE MUTANT NINJA TURTLES