Incomplete Conclusion (3).

Just as Cain was about to say something, something chimed in his ear, causing his expression to turn incredulous...

***

{Congratulations to Host... You have successfully completed the First Trial. Your actions, though seemingly subtle and inconsequential, have caused a significant change in the flow of History}.

***

'What?! How?! When?!'

He was beyond baffled. He didn't even know what the goal of the Trial was yet, and now, the system had arrived, saying he had completed it already.

Suddenly, something clicked in his mind. He began piercing things together...

'A change in the flow of History?'

What did this mean? The world around him, the world he was seeing... Could it be that this wasn't an illusory trial the system had conjured?

What was the meaning behind this?

As for the change the system was referring to...