The Last Turtle Yokai

It's been a year since the Kraang invasion attempt and our favourite turtle family have recovered their physical wounds. Mental, however? They've been better, but are on the mend. Life has become quiet in the absence of the Foot Clan and they haven't had to face Big Mama in a while.
That's all about to change as a new character crashes into their life. With mega baggage from a traumatic life so far, can the family help their new friend open up and find a new lease on life?

Backstory for my RotTMNT OC