AU details and characters

Leo was always the brave, happy and supportive brother, the fearless one, no matter what. But when his brothers find out why their brother never fears anything, they are shocked. Never could they have imagined what really was going on inside his head. Demons and shadows are chasing him, wrapping him into such a darkness, someone in his age shouldn't have to deal with.
Now it's Donnie's, Raph's and Mikey's turn to help their brother and to save Leo from the darkness, that threatens to devour him.

This is an au of mine, which takes place in the 2012 universe, but Donnie is the oldest and Leo the second youngest and more than he seems...

More details are to follow.

Art is mine, please do not repost