After the hours-long reading session and combined with the previous hours that he pumped into his work, Sebastian was tired but this did not diminish his fascination and enthusiasm about the knowledge that he just learned.
Sebastian didn't leave immediately; the first impression was very important in situations like this as they were what stuck to the mind the most.
His wild and adventurous spirit was already stimulated, he wanted to properly comprehend and consolidate the ideas that were currently flowing in his mind before leaving.
The book on the mysteries of the mana core was not what fascinated him most about everything that he just learned, but its different take and detailed explanation on the mana core provided him with a different perspective about it.
According to the scientist, Albert Stone, the mana core was the driving force of every magic predator and he did not doubt it having experienced it himself.