"That's impossible! It's water, can't you see it?!!" from the side, Angelica couldn't help but disagree with him.
"Keep walking," William knew that trying to explain the obvious to her was futile. She said it herself; no one knew the true secrets of this place.
It did indeed look like water, but how this water acted was something that got no other explanation but being a monster.
"A monster who has part of its body take the form of normal water is quite cunning…" he muttered while watching that bulk of water rising up to form some sort of a mushroom shaped solid creature. This creature clashed fiercely against the fire pillars, and even with its surface looking like water, it couldn't stop the fire and instead got lots of damage.
William saw globules of water break apart from this creature and fall to the ground, ending up splashing on the ice and turning into a small lump of ice.