A quick flashback—four days ago, to be exact.
After Eren finally pinpointed the location of where to find the hidden dungeon, he realized he needed a solid plan to sneak away from the knights without making them suspect he had run off or disappeared completely.
His first idea was reckless but simple, just run off on his own, dungeon-bound, and not care about the chaos or panic his absence might cause.
However, after a moment of clarity—and probably imagining his father, the Marquis's reaction —he scratched that plan off his mental list.
"If I vanish just like that," Eren muttered to himself while lounging in his bed with a bored expression, "those overprotective parents of mine would flip the entire kingdom over trying to find me…"