Right after Eren received his remaining Sin Series Marks.
At the battlefield between the two kingdoms.
"These mana ripples… Uncle Garos, what in the heavens is going on?"
The voice, marked by shock and apprehension, echoed through a spacious chamber nestled within Edinburgh's army base. The speaker was none other than Emi Edinburgh von Renar the 9th, the reigning monarch of Edinburgh.
"This...this is an omen," responded another resonant voice, heavy with gravitas. "It means that something momentous has taken place." The tone grew increasingly serious.
"It appears that someone within our kingdom is implicated in this matter. I can sense an overwhelming surge of infernal energy suddenly injected into this closed-off world, seemingly out of thin air. Anfang's World Will is reacting and neutralizing by inducing these natural calamities," explained the source of the second voice.