I guess they are not so tuff when they are not abusing a mutilated corpse
That moment, what's seen by the Koyukkuri are a group of Remirya gathering under the moonlight.
"Why is Remirya here!?"
The smell of the pudding filling the cave was brought by the wind across the mountain and invited a large group of Remirya here.
"A lot of pudding do~"
"Remi will leave none do~"
Remirya see the koyukkuri as nothing more than pudding.
But the koyukkuri didn't run. For them, Remirya are just pig... pudding.
"It's finally time for Marisha to be a hero je! Everyone, follow Marisha je!"
Of course, all the koyukkuri are massacred.