Hunter x Hunter: The Last Mission(2013)

Hunter x Hunter: The Last Mission

The strongest Hunters that once existed in the Hunters Association were split into “light” and “dark”, and each walked down their respective paths. The “dark” side begins moving in order to massacre all Hunters! What actions will Gon take when the many crimes of Netero and the Hunters Association are unveiled...!?

(Source: Anime News Network)