Gutted With No Glory

TW - Gore, Depression, Language
Source - Rise Of The TMNT, a few 2012 TMNT referances

the war starts and Raph is killed when saving Donnie from a Kraang attack. Leo blames Donnie for it, and Mikey takes no sides. As Donnie tries holding on to his last bits of sanity, he has PTSD flashbacks and meltdowns. Without his brothers support, he goes a little coocoo bananzas. He runs away from their home and joins forces with the kraang. He soon becomes Kraang Prime, becoming part mutant turtle and part Kraang. He produces many clones of himself to fool his family and friends.

in this story-
Raph - 18
Leo + Donnie - 17
Mikey -16
Draxum and Splinter are married from the beginning :)