Three days later, a group of monsters stormed a certain Dark Island to plunder it.
Ordinary islands could not satisfy these monsters' needs. The places they targeted were either relatively prosperous islands or Dark Islands.
Dark Islands in particular offered all kinds of contraband and drugs that these monsters needed.
Rejected by the sea and turned into outcasts, many monsters sank into drug addiction.
They longed to return to the sea, yet were consumed by rage. They no longer considered themselves human and showed no mercy.
Many of these monsters had mutated so thoroughly that their appearances were impossible to accept.
Some humanoid monsters could disguise themselves as members of the Mink Tribe or Fish-Men. A little concealment was sometimes enough to keep people from shunning them.
Such monsters were rare, and very few had survived.
Even those who had survived had left early on.
They had no qualms about attacking Dark Islands. With their mutated bodies and the Liger Mammoth backing them, they were practically unstoppable.
The bounties on these monsters in the Underworld kept rising.
Yet no one could do anything about them.
After all, among the surviving monsters were some powerful enough to rival Great Pirates.
After seizing all kinds of supplies, the monsters headed straight to the Dark Bank branch on the Dark Island and deposited their loot there.
They could withdraw it whenever they wanted.
This spatial ability had changed people's lives enormously.
Beyond the Underworld, it had also found widespread use in many other fields.
Many people actually knew what lay behind the Dark Bank: the Paramecia-type Mirror-Mirror Fruit.
But knowing was useless. Everyone who had secretly infiltrated the Mirror World had vanished, never to emerge again.
Different people entering the same mirror would be transported to different areas.
Those marked by Jörmungandr's ability