It had been ten months since Grain opened his path ways.
In that time he managed to fully condense his new found power, and used it to wipe out dozens of entire forces by himself. Didn't matter if the enemy had twenty men or two hundred, Grain simply obliterated them.
Adam had learned not to send him on missions involving hostages, because something would always befall them. Resulting in a familiar nickname being used for this savage soldier.
WolfGod.
No connection could be found of the soldiers in Crane and the members of the Demon Continent, but it wasn't an unimaginable coincidence. Grain never took off the wolf-like mask and many people had heard of the demon with the face of a wolf.
So it made sense that the name was adopted here with no communication from the humans, but that didn't mean the humans hadn't heard of the WolfGod's return from the demons.