Ease your mind of all your Worries, a TMNT 2012 based Dirty/NSFW fanfic has been updated.
Click here to read the chapter: https://archiveofourown.org/works/35125771/chapters/87505042

The fanfic is a long series called "Factory of Perversion"
Click here to read the whole fanfic so far: 
https://archiveofourown.org/series/1966192