Bottom of the Abyss.
The Dimensional Expedition Plan of the One-Eyed World-Cleaving Ancestor had begun long before Green entered the Dimensional Esophagus.
The Abyssal Devil Race hidden within the Dimensional Esophagus had continuously tried to establish legion forces there, providing sufficient security for the Abyssal Devil Race's dimensional expedition, drawing those neutral powers capable of influencing the war to the Abyssal Devil Race's side—or, at the very least, obtaining a general grasp of the intelligence.
To this end, the One-Eyed World-Opening Devil Ancestor had planned for nearly ten eras.
Ten eras were rather too long even for some Overlords, yet after defying fate, the One-Eyed World-Cleaving Ancestor had immediately begun making preparations!
Unfortunately, the One-Armed Sacred Body Ancestor was far too insistent, and the clan, buoyed by successive victories, was brimming with confidence in the Void Crossing Plan. Thus, the One-Eyed World-Cleaving Ancestor had not received the full support of the race. He could only rely on the loyal forces he had cultivated himself to carry out the plan. By the time the One-Armed Sacred Body Ancestor faced more and more enemies—so many that the Abyssal Demon Dragons supplied by the Demon Dragon Ranch could no longer keep pace with wartime consumption—the invasion war not only failed to advance, but had instead begun to retreat step by step.
After several eras of such deadlock, the One-Eyed World-Cleaving Ancestor finally received his opportunity. The One-Armed Sacred Body Ancestor had personally led the campaign, only to suffer a crushing defeat!
This defeat was by no means accidental.
In the One-Eyed World-Cleaving Ancestor's view, it had been inevitable!
Over the course of his long life of wandering, he had seen far too many unimaginable lifeforms. Some of them had even left him shaken.
"I'll go see how the illusory space-time passage is progressing.