The Take
Ninja Slayer serves up absurd cyber-ninja revenge pulp that never graduates past its Twitter-era web novel roots. The premise of a salaryman possessed by a vengeful spirit delivers campy thrills for a few episodes before the fights loop and the plot idles.
The Verdict
The 2015 ONA from Studio Trigger stretches a one-note premise across too many episodes with animation that often looks phoned in. Vengeance lands as a thesis but never gains depth or fresh stakes.
Skip it. Watch Ghost in the Shell: Stand Alone Complex instead.
Common Questions
What is Ninja Slayer about?
A salaryman merges with a ninja spirit to avenge his family by killing other ninjas in a cyberpunk city.
How many seasons of Ninja Slayer are there?
One 26-episode ONA season from 2015.
Is the Ninja Slayer animation worth the hype?
No. Trigger's work here looks rushed and repetitive compared to their stronger output.
