A mysterious ninja soul inhabiting Kenji Fujikido's body. Naraku shows up with an appetite for slaughtering ninja that happens to align perfectly with Fujikido's own thirst for revenge—and together, they form Ninja Slayer, basically a grim reaper figure who kills ninja. The deeper their mental connection gets and the more their bodies sync up, the stronger Ninja Slayer's fighting ability becomes. Fans often note that if Fujikido fully gives himself over to Naraku, his karate would reach near-invincible levels.
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