[all] About zent

In story many people raged war for throne in past before the G-tool as well. My question is why they were still bothering to get book of mestinora, as one can simply steal key of library and go to the foundation.

Even now I feel , people can simply dye key and use their ADC course knowledge to rule with no issues.

Off course it be as restricted as lord traquel’s rule. But warmongers can now just take shortcut and other than gate related features can be considered low priority.