Main character

Y/n L/n used to live in America as a ninja vigilante named The Demons mask but one day Y/n was met by Kiriya and he tolled Y/n to come back to Japan and join him in his school as a student and as a shinobi. At first Y/n refused but Kiriya tolled Y/n about his evil father and his evil shinobi cult and with no choice he moved back to Japan and he must faced his past once again but with his shinobi friends as they battled against monsters and Evil shinobi that threaten Japan or maybe the world.