TMNT: The Last Ronin is an R-rated Teenage Mutant Ninja Turtles saga

A TMNT story with Old Man Logan flavour that harkens back to the grim 'n gritty roots of the beloved gang? The only thing I can say to that, is cowabunga. As originally seen on Critical Hit! TMNT: The Last Ronin is an R-rated Teenage Mutant Ninja Turtles saga