Hunter x Hunter: The Last Mission
Some decades ago, chairman of the Hunters Association, Isaac Netero, sealed away Jed,
a man representing the "shadow" of the association
that had begun to make use of the power referred to as "On".
"On", being the other side of the coin of "Nen",
derives its power from the user's pure hatred, at the cost of their own life.
Although Netero thought that he had sealed Jed and "On" away, a team of On-using warriors
appear at the Heaven's Arena Battle Olympia Tournament.
Gon and Killua, who came to cheer Zushi, along with Kurapika, who attends the tournament
in order to protect his boss Neon, are forced to try and find the source
of a violent invasion of the Heaven's Arena tower and defeat it.
However, this may not be so easy, as their opponents use the power of hatred
and they wish for the death of all Hunters.
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