Perma-Death

Perma-Death is a data wipe in Naruto Online 2: Shippuden. There are ways to obtain a perma-death.

The Ketsuryugan and other dojutsu is unlocked when witnessing a perma-death.

Akatsuki
The Akatsuki can perma-death you by executing you when you are being hunted. Being hunted makes you unable to log without being wiped. When you are being hunted by an Akatsuki, dying or leaving will leave you perma wiped.

War
During war, players that are executed have a 15% chance of getting wiped! You will know when you are in a war if the sky becomes cloudy/rainy.

Anbu Missions
As Anbu missions take a lot of village resources. As a result, players on both ends of an Anbu mission when executed have a 30% chance to get perma-deathed.