Low-level cosmic crystal

'It must be the knowledge that heavens put in my head.'

This was the only conclusion that Lucas could come to after thinking for a few moments and felt it was not bad.

'So, as long as I ask more and more questions, I can realize the answers on my own.' Lucas revealed a slight smile on his face; however when he realized that he only had limited access to the knowledge.

'As long as I can upgrade my rank, I can know all the secrets in this world.'

Lucas found another reason to upgrade his rank and it was to explore more and more secrets of this magical world.

The thing is Lucas had a lot of questions in his head like, 

'How did his soul come to his world?'

'Who created the systems?'

'Why did the nine firmaments have barriers in between them?'

'Why the evil beings and human beings fight? Is it just for the land and resources? Or is there something else?'