Rise of the eighteenth

"welcome to the system".
"what is this??.who are you??.where are you from??".
"I am the system in ur body.fell free to call me whatever you want".
'woah!.is this for real?,now I can exact my revenge on the new kingdom for what they did.
I am going to reclaim our rightful land.
this is the story of how I became the greatest and strongest warrior to ever exist.