Robin's tail seemed to realize it was being hunted and didn't appear again for several days.
Then, seven days before the Black Tide was expected to arrive, Maria finally sent word of Robin's whereabouts.
Unfortunately, it wasn't good news.
A Tier 2 Wizard had been killed in an attack by Robin's tail.
After receiving the message, Thor went to find Keli.
"Keli, how many Scrolls of Inertia Witchcraft have you prepared?"
Keli had dark circles under her eyes. She squinted at Thor. "Five."
"Give me one. I might need it today."
"They're on the first shelf over there. Help yourself." Keli bent her head and went back to work.
The last time Thor had gone out and captured Benjamin, Murphy hadn't said anything, but afterward, he'd sent Thor and Keli a large amount of resources. It was clearly a reward for Thor.
So Thor no longer needed to go out of his way to hunt Black Tide Monsters for Gray Bone. He could devote more of his time to research instead.
After discussing it with Keli over the past few days, they had confirmed that Gray Bone was indeed closely connected to the White Bone Monsters of the Chaos Domain.
When the Black Tide Pollution inside Gray Bone reached a certain threshold, applying Inertia Witchcraft would turn the highly polluted Gray Bone into white bone.
This also confirmed the reverse: the white bones found throughout the Chaos Domain were mostly the corpses of creatures that had completely undergone Alienation in the Black Tide Pollution.
So the Chaos Domain really might be the continent that had been swallowed by the Eye of the Abyss—the Diserdir Continent, which had disappeared from this world.
Thor also realized that his ability to suppress Gray Bone and make it behave probably came from the Anchor