Leonardo may have beheaded Shredder, but that doesn't mean he's gone. In fact, his soul is still very much alive, just trapped in another dimension, and now he's a different turtle's problem. (Rise and 2012 crossover. Mostly the Leos, because there's not enough of those two.)

The world burned around them. It was just about the only thing Raph was aware of as he crashed to his knees beside Donnie and Mikey, resisting the urge to gather them up in his arms and hold them tight, because they didn't need that right now.

Mikey wakes up to discover the startling truth; just because they rekidnapped Leo didn't mean their brother was back. An attempt on Splinter's life is made.

Karai steps over a line. Leo snaps.

Safely back in New York, Leonardo's leg is still bugging him. Raphael, naturally, fuses over him, and Splinter learns just what his sons went through, and are still going through, since they fled the Kraang. 2012 TMNT, Spoilers up until halfway through mid-season 3.

Sonic was great. Really. But he wasn't what Tails was here for. Tails had to keep moving and had to find the answer to all of this.

Coffee Shop AU! Featuring Amy Rose, Nikki, and mysterious superheroes that lurk city streets. (Will come up with a better summery later.)