"I don't blame them for keeping that titbit secret," Shiranui understood, "That must have been quite a bombshell when it was initially found out."
"Downloading Pokédex app update…" Shiranui's Rotom Phone chimed, "Download complete; historical data from Hisui added."  He accessed the new data and found out some of his Pokémon had variant forms native to Hisui.  He checked out the entry for the Zorua evolution line.
"[i]Zorua: Hisui Form, the Spiteful Pokémon.  A Normal and Ghost type.  A once-departed soul, returned to life in Hisui.  Derives power from resentment, which rises as energy atop its head and takes on the forms of foes.  In this way, Zorua vents lingering malice.
Zoroark: Hisui Form, the Baneful Pokémon.  A Normal and Ghost type and the evolved form of Zorua: Hisui Form.  With its disheveled white fur, it looks like an embodiment of death.  Heedless of its own safety, Zoroark attacks its nemeses with a bitter energy so intense, it lacerates Zoroark’s own body.[/i]"
"Those poor things," Shiranui commented, feeling sorry for those Pokémon, "What drove you guys to feel such malice?"