Eren had single handedly brought down the Kiel Family, saving the heir of the family, who now worked for him.
Through Ruby, he had made inroads into the Northern Continent. More importantly, he now has backing to drag the Western Continent into mud.
Despite everything working out for him as he planned, he still felt a little restless. Everything had gone a little too smoothly.
He still hadn't forgotten the author's warning. His trip to the Northern Continent was going to lead to his death. There was moving in the Kiel Family Estate that could threaten his life, so which part of the future was the author talking about?
Was he looking even farther into the future than he had assumed? Eren wasn't sure. The only thing that could threaten him in the Northern Continent was the Necromancer Tower.
"Was that warning related to the opening of hell?" he wondered, gazing at his inventory which still had the Hell's Pass.