Hayabusa's back. After fighting to avenge his father, destroying the demonic forces of darkness and defeating the evil lord Jacquio, Ryu Hayabusa is back, once again, to flip out and kill stuff a second time. Because that's what ninjas do.
And ninjas, plural, is just the right word for this sequel – because in Ninja Gaiden II: The Dark Sword of Chaos, Ryu doesn't fight alone. He's joined by two other assassins of the night, who move, jump, climb and attack just like him. Right behind him.