Yaiba: Ninja Gaiden Z is a 2014 action-adventure game and a spin-off of the Ninja Gaiden
Set in the universe, "Earth-14", the game follows the exploits of the powerful ninja Yaiba Kamikaze. Yaiba was once part of a clan that tested the abilities of its ninja by putting them up against a highly skilled member; in this case it was Yaiba they had to face. However, after growing weary of his work, Yaiba eventually decides to massacre his own clan and leave the survivors to their deaths. At one point he meets with the franchise mainstay Ryu Hayabusa and decides to challenge him, claiming that he is the weakest foe Yaiba has encountered thus far. During the battle he discovers otherwise as Ryu slices Yaiba's left arm and eye, killing him.
Later, Yaiba is discovered by a mysterious organization known as Forge Industries, led by Alrico del Gonzo, brings him back to life and restores his lost body parts with mechanized duplicates, thus turning him into a cyborg, with a female scientist named Miss Monday as his navigator.