A focused state was an ability of the Void Library that grants the recipient the ability to remain in a magically induced hyper productivity state for a prolonged period of time, without tasking the brain or exhausting the soul or mana body.
In this state, the user would be able to easily absorb the all magical and non magical knowledge they were studying with relative ease. It was a state that provided the perfect means for magic casters to escape the time consuming process of learning and researching old and new magic.
This ability was the reason Tyler had been able to easily learn the extensive and difficult foundation language that is magic runes. Something that was impossible even for super geniuses. It wasn't a ability that existed in the outside world as the only skill that came close to it was Mammon's skill, Prudent Student.