At the peak of a small, flat mountain top.
The midnight moon was spreading its pleasant, mellow light over the dense vegetation around the steep mountain. This mountaintop wasn't anything special. Nevertheless, it provided Eren with a safe place to carry out his next activities.
Kiyeeeh!
An eagle cry resounded in the surroundings as a man and a demon beast landed on the flat mountaintop away from Kilaba's tribe location. This time, he knew he wouldn't be disturbed.
Eren was at its wit's end trying to maintain his domain of wrath around him and Argo as they were flying. This was all while he controlled the creature of wrath that would have become berserk if he dispersed the domain.
Eren didn't underestimate Kilaba even when the monster was about to die. His evolution as an Orc Lord wasn't to be scoffed at. If it wasn't for the last vial of illusion potion he had in his vial, he wouldn't have thought of messing with someone like Kilaba.