The reason Anaki and Inaki are the two most brilliant minds on Earth is because of the class they awakened when the apocalypse descended.
Runic Magic.
There are many others who have the ability to draw runes; however, they pale in comparison to these two. Their class is specifically for Rune Magic.
This meant their path to advancement is through walking the Rune Master path. However, that is where it gets technical.
They were already engineers before the apocalypse descended, so when they awakened this class, their brilliance was amplified.
Just like how the Three Nerds became even smarter, allowing them to make Oracle, Anaki, and Inaki also became much smarter. This allowed them to take their minds beyond their current understanding.
With a class like Runic Magic, they became engineering wizards. Their minds kept getting stronger, and the more they grew in their cultivation base, the more brilliant they became.
