Ninja Slayer Kills 4

Already a hit in Japan, where there have been three manga series and an anime adaptation released.

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In the cyberpunk metropolis of Neo Saitama, Kenji Fujikido is an average salaryman whose wife and children are suddenly assassinated. Tracking the murder back to a ninja, Fujikido trains to seek vengeance initially on those who murdered his family, but ultimately on every ninja on the planet...