The change in Association.

"Lord Varain, Equatoria has fallen." 

A 4-meter-tall being with skin made of molten Lava and hair that burned like flames entered the room. Despite having such a fearsome appearance that would make even the strongest of warriors waver when in front of them, the being still bowed his head as his eyes fell on the being sitting inside the room. 

After all, the being inside the room was someone almost everyone in this world and even other worlds feared. 

An 8-meter, massive, hulking being whose body was made of stone and earth. He was not a being anyone could simply ignore, he was the strongest of his race and that was when his race was already absurdly strong. 

The Terratrums. 

Their bodies are composed of living rock, giving them defences far stronger than any other beings at their level. It is said a Terratrum could participate in a War and come out alive even if he didn't make a move. 

That was simply how strong their bodies were.