Chapter 571 - Going back
"Well, around this time you can say even the Oni Kingdom became very serious about those people and naturally our king already increased the security. Also will become very careful about those dark humans who could easily hide themselves.
Unfortunately for any of those people because even if the try to come to our Kingdom they won't be able to do that as the king already increases the security in the main gate and every people who wanted to enter the Oni Kingdom to go through those strong observation.
But you can say not only inside the kingdom but we also became very alert about outside of the kingdom and because of these almost in every month the king will send the team to the danger zone to find if any suspicious people near the kingdom or not and even if they able to find any kind of trace of dark spiritual energy they would immediately inform the king and the warrior association.