New Headcanon Book

New sengoku war (TMNT X Gaim)

(The incarnation i will be using is the Rise of the TMNT)

Mysterious Roots grew in the new york city parks and later became a forest. because of this, the Earth Protection force (EPF) are sent to investigate the roots, during their search for the missing people, however the roots blocks the exits, later screams are heard and the roots opens the exits..

News spreads quicker than ever as The turtles (Leonardo, Raphael, Donatello, and Michelangelo) investigate the park turned forest, unknown to them, the monsters who attacked the EPF are no other than the Inves. Monstrous animals capable of travelling between alternate and real world. Unable to fight against the monsters. new york city went into quarantine as the entire forest became bigger and cover buildings with it's roots, later becoming the new helheim forest. Later the turtles are captured and placed in cages so that they can't escape. luckily, the Man of the beginning gave the turtles sengoku drivers and the lockseeds (Leonardo gets the blueberry lockseed, raphael gets the Jackfruit Lockseed, Michelangelo gets the Banana lockseed, and Donatello gets the Grape/Budou lockseed), lastly he told them to fight against the inves  before disappearing 

The new war happens with the hidden city and foot clan wanted the forest power, the turtles on the other hand wanted to protect it.. thus starting the new sengoku war.