An image gallery with concept art from the video game Yaiba: Ninja Gaiden Z

Yaiba: Ninja Gaiden Z has players controlling the ninja Yaiba Kamikaze, an antagonist "killed" by franchise hero Ryu Hayabusa, as he sets out on a vengeful quest to kill Ryu. He was resurrected as a cyborg by a mysterious organization, and he has to quell a zombie plague in exchange for the power he needs to take his revenge.