Necromancy 101
-----
As Frank had fused his soul with the Divine Soul Fragment of Hades contained within the S-Grade Item he acquired, the black crystal ball slowly turned into black dust dissipating behind Frank, who had now opened his Inventory, taking out four corpses of three beastmen he had killed, former members of the Thieves Guild.
Their names, which Frank had found out by appraising the corpses, were the Black Cat-kin Styx, Dog-kin Wofur, Rat-kin Rashk, and Wild Cat-kin Boferou, all of them had achieved the minimum of Rank 1 Middle Stage, but now that their Mana Cores were gone, they were mere corpses with a bit of a remnant Mana within, which slowly began to dissipate out of the corpses as they started to rot.
"Will the Undead made by these corpses be of any good quality? They lack a Mana Core, and we can't recover it because I just absorbed them…" said Frank.