Sovereign Cores (1)

After the trial inside the dungeon, Klaus didn't immediately check his upgrades. Back then, he was homesick, so when the chance presented itself, he took it, and it was the right move. 

Had he wasted even an hour to check his upgrades, Miriam would have died, and he wouldn't have forgiven himself. Only the stars know what he would have done if that had been the case. 

But now that everything was alright, he had the time to check his upgrades.

His Cores were 7 Sovereigns and 2 Greats when he came out of the dungeon, but he had to sacrifice five Sovereign cores just to save Miriam's life. 

It was a huge sacrifice, considering his cores and requirements to saturate them are in a league of their own. But his worst fear didn't come to pass. 

Within a week, he had already recovered four of his cores, now having 6 Sovereign and 3 Great cores. That was a huge upgrade for him, and he was grateful.