Vlad internalized all he had learned from sealing the soul of the demon centipede. After a few hours, he turned his eyes toward the next demon Champion and brought out a new parchment with a runic formation.
Two days went on like this, with Vlad sealing the soul of a demon Champion, analyzing the process with the help of the A.I. Chip, improving the runic formation, and trying again until there were no more left.
After finishing with the demon Champions, Vlad took an entire day for analysis and simulations before focusing on the High Champion Abyssal. This time he did not take any ordinary parchment but instead brought the skin of the Level 14 Abyssal Demon corpse from Nagan Mountain along with all sorts of new and extremely precious materials.