It took Aleron one hour to absorb all the knowledge of magic books despite using this extraordinary method to absorb the knowledge of multiple books at once.
These books were an accumulation of refined arcane knowledge gathered over centuries, and since Aleron was able to comprehend all the knowledge, his ability to design skills and the speed to design would increase drastically.
Fortunately, Primordial Genome Whispere had also developed his brain in a better way, and since his physical stats had increased by 500%, he didn't feel much strain digesting a large amount of knowledge concurrently due to the higher agility of his brain.
This was also why he could maintain a 1500-kilometer radius Monitor Dome while also working to mark people and teleport Xorgs for over three hours straight.
"Alright, I'm finally done," Aleron grinned and descended while the last book returned to its shelf.