Water vapor rose from the Shadow Marsh. Viewed from above, this endless, sweltering marsh looked like a lake dotted with occasional patches of green vegetation, except that the water was murky.
Darkness erupted outward in layers, centered on Black A. Combined with the ghostly green light leaking from his pupils, it gave him the aura of a netherworld beast. More importantly, the ring mark on his right index finger had become several times clearer.
Seeing this, Su Xiao knew that the original-sin causality of the Book of Original Sin had been further stimulated. The reason he had arranged all this was to create a buffer when breaking the original-sin causality. Black A was undoubtedly the best buffer.
First, Black A had been created by him and shared a close causal connection with him.
That was also why Black A could serve as a buffer for breaking this original-sin causality. If the original-sin causality was likened to electricity, Black A was the "resistor" through which that current spread along the causal line toward Su Xiao.
Moreover, it was one of the only five "resistors" Su Xiao could use in the Astral Realm. Even better, this "resistor" had already devoured the other three of its kind, massively strengthening itself. If devouring Crystal Ji had not most likely caused an unknown mutation, Su Xiao would not have appeared now.
A supreme cannon-fodder and human shield like this could not be allowed to die easily before the original-sin causality was broken.
Su Xiao released the hilt of his blade. Ao Song Crystal spread across his hand, forming a straight crystal staff 1.5 meters long and as thick as an egg. After some thought, he shortened it by two rounds. Once that was done, he tossed the crystal staff to the demon spirit beside him.