Why would the same kind of people kill each other?

On the Mexico border, by the beach in the coconut forest.

Chekhov was holding a lunchbox and looking at the drone hovering in the sky.

After aiming, he shot it and it fell into the sea.

After that, he jumped down from the tree and got into a pickup truck, which drove into the forest.

Mali was driving, and the two of them didn't notice the coquettish Duke standing on a tree behind them.

He looked at the pickup truck in the distance with a complicated and confused expression.

He seemed to have felt the ultrasonic waves released by the guy with the sniper rifle?

Right!

The deviant Corp?

The Duke's eyes lit up with interest, and he quietly jumped from one tree to another. The pickup truck was running on the ground, and he followed from the treetops in the air, without Chekhov noticing him at all.

The car drove into the depths of the forest, and there were several townhouses by the sea, all of which were contracted by the deviant Corp.