Karasuno Crows: Out of the Shadows

Hinata,Kageyama, Tsukishima and Yamaguchi have trained in the way of the ninja since they where kids by there sensei and father Ukai but when there sensei moves the boy to live with his son in New York with the Shiratorizawa Clan after them and fine started a normal teenage life hard also hiding there vigilante ninja personas.
Yeah this is a recipe for disaster.

Disclaimer, The first years are all siblings and this was just something I came up with on the top of my head and I ran with it.

Yes this is a TMNT/ Ninja AU