This is both the graveyard of death and the womb of new life.
By using the Dream Realm Authority of him and Vivian as the lead, the Power of Fate of the Three Lake Fairies as the framework, the remnants of countless souls as materials, and Avalon Island as the reference point... one can create a world both illusory and real within the Inner Sea of Stars.
Here, Celtic doesn't need safety; crises can exist, serving as the whetstone for Danu;
Here, everything follows the cycle of birth, old age, illness, and death. Sapient beings experience emotional ups and downs, allowing Danu to gradually awaken her intellect and sensibility.
Here, the flow of time is not influenced by the outside world, allowing for trials and errors until Danu condenses a complete soul.
Meanwhile, the Danu Gods who once participated in the Great Sacrifice will be born in this world, saying a final farewell to the past in reincarnation, reuniting under the new banner of Goddess Danu, becoming her support.
