Mutant Turtles: Choujin Densetsu-hen

In a world where the Teenage Mutant Ninja Turtles possess a newfound power, the acquisition of Mutastones from Crys-Mu, the spirit of light, grants them the ability to transform into Super Turtles for a temporary duration of three minutes. This enhancement allows them to amplify their abilities, but their arch-nemesis, the evil Shredder, is not far behind. Shredder and his minions Bebop and Rocksteady stumble upon the Dark Mutastone, a powerful artifact that transforms them into Devil Shredder, Supermutant Bebop, and Supermutant Rocksteady, respectively. The Turtles, however, possess an ultimate form: Turtle Saint, a powerful combination of the four brothers, making them a formidable force against their enemies.