Demon-killing Arrays and Demon-stopping Barriers

Ainz went outside the Lord's Hall and walked towards the three areas where the edges of the village were. He watched and observed while picturing out the imaginary pillars that he would construct.

As for the pillars, they were the Demon-killing arrays or the Murim, Elemental, and Integrator arrays. The next ones were the Demon-stopping barriers or the Demon weakening barrier, Monster repelling barrier, and Shield barrier.

"This is a good place to put them," he made a square out of his fingers while watching its hole as he looked from afar.

He needed to put a contingency plan when it comes to protecting the village. He doesn't know how strong the enemies were. As for these barriers and arrays, it could only protect them from Legend rank enemies and below. As for mythical to god-rank demons, it would not be as much effective. They needed to at least on themselves or from the Gods that ascended.

Well, they were all his past comrades and maybe could help in direst times. As for his prow