Both series are psychological thrillers that weave together several stories and feature a mysterious assailant.

They are both surreal psychological thrillers from the director Satoshi Kon.

Paranoia Agent

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Paranoia Agent

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Nothing too upsetting in the violence department.
There is more disturbing sexual content then violent, including a disgusting man who spies on his own daughter getting dressed. Ugh.
(Still a good series though)
But definitely not a show for young viewers.