Atop the mage tower.
Shion, who was concentrating on maintaining the magical barrier, suddenly opened her eyes and cried out, "This is bad! Something's coming our way!"
Hikari asked, "What is it?"
Shion shook her head gravely. "I'm not sure, but it's powerful. No, it's incredibly powerful!"
Hikari's expression darkened. "Stay in the tower. I'll go take a look!"
With that, Hikari leaped out of the mage tower.
Shinji had assigned her to stay by Shion's side. Besides using Yachihoko to record the magic of the Six Rings World, her other main purpose was to ensure Shion's safety. Now that a powerful enemy was approaching, she naturally took it upon herself to meet it.
As soon as she flew into the air, Hikari's Six Tomoe Rinnegan spotted a mass of darkness rushing in from the horizon.
"That's..."
Taking a closer look, Hikari recognized what it was.
There was no doubt about it: the approaching shadow was the Black Giant Serpent, formed from the Breeding Overlord's remains.
Just like the gray-white mist formed from the Plague Overlord, the Breeding Overlord's remains were desperate to escape the Six Rings World and return to their main body.
But it had run into the same problem as the gray-white mist: Uchiha Hikari's dōjutsu, Heavenly Rock Door, combined with the magical barrier cast by the six Archmages, had briefly sealed off the space of the Six Rings World, trapping it there alongside the gray-white mist.
However, the Black Giant Serpent was formed from the Breeding Overlord's remains. It possessed an Overlord's status, and on top of that, it had devoured a wisp of gray-white mist and gained some of the Plague Overlord's abilities. So it soon realized that the key to escaping the Six Rings World was the mage tower where Shion was staying.
Taking