Mystic Heart: A Rise!Donnie X GN Reader story

This is a Rise!DonnieXReader fanfic. Here is the context:
When you were just a baby, a certain warring warrior scientist replaced your heart with a very rare mystic metal. Your whole life, you've been on the run from greedy yōkai who think your heart could give them immortality (your heart in fact does NOT give immortality). In this story you get mutated into a turtle. Here are the abbreviations:
(T/T) = Turtle type
(Y/N) = Your name
(S/C) = Skin color
(H/C) = Hair color (if any hair)
(E/C) = Eye color
Later on in the book there will be lemon and lime, but that will be far in the future because I'm planning on dragging this out >:D
Please enjoy!

Also, Rise of the TMNT is not owned by me. All credit to Nickelodeon.