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In the Underworld, the Fields of Truth.
A streak of grey flashed past, and space trembled as Hades staggered out from the void.
At this moment, his face was extremely weary, etched with the expression of one who had narrowly escaped a calamity.
Just as at the onset of Typhon's disaster, when Helios within the Sun was infected by the branches of the Mother Tree, the Underworld – as the interface closest to the Abyss and Niflheim in terms of the concept of space and time – was directly corroded by the power of the Mother Tree. An endless stream of force had been flowing through the fissures in space and time since the outset, bypassing the seals to assimilate everything around it.
Some close minor interfaces were altered in an instant, and the Underworld faced great trouble. Almost immediately, Hades chose to fuse with the symbol of his godhood to counter this sudden disaster.