Skill Book Broker: From F-Rank to Tycoon

In the original world where the Awakeners (they only get a set of skills defined from the beginning and can't get more skills) from F to S, Adam becomes Walker down - an F ank and a no-nonsense look. fighting strength. Next link. Scorned by society and ignored by the powerful, Adam allows himself to live a carefree life.
But if his power suddenly opens the portal to the other world (players are given a skill book to use, but only a small number can be used by one person) Everything changes. This amazing world is full of dangerous dungeons, rare items, and many locations. In one world, Adam is a minor F ank. On the other hand, he holds the key to unlimited power.