Within the various Realms of Genesis, while Hel and the other Supreme Gods were about to continue their war, things were happening. The world of Genesis was not just all about Hel's war, the entire world was undergoing tremendous changes, as portals to other Planes opened constantly. And a certain race of beings from another Plane, another dimension… were already on the move. Some had allied Odin and his family of Aesir. But others… had decided to go against them.
Poseidon was one of those contacted by such a strange, otherworldly entity. Within the Realm of Atlantis, an entity that can only be described as transcendentally beautiful emerged. A being made entirely out of pure spiritual liquid, but that was not at all like Rimuru… However, it took the slight shape of a woman. The strange entity seemed to come from another plane, the Spiritual Plane.
After the new Eras began with the birth of the many new Supreme Gods, new Eras started and the enormous quantities of special types of energies began to overflow the world of Genesis. This provoked that space and time distorted, and through the overflowing rich energies, "paths" towards other small dimensions opened! These were the planes.
The Netherworld Plane had already proclaimed itself as the enemy of the entire World of Genesis and beyond that point, even the entire Universe, but the other Planes… what were they up to? Until now, a certain Plane and its members had been acting behind the scenes, the Spiritual Plane.
However, much like the Necrotic Overlords whose powers could not be showed completely in this world, and that they required a special domain to be able to pass through, these spiritual entities required vessels. As their bodies were non-physical and composed of enormously compressed quantities of elemental spiritual energies…
But what did they wanted? Poseidon received the visit of one, and quickly learned that her intentions were not bad. She required help… She was part of her own dimension and had come to this World seeking to stop those that came here first.
Poseidon, a Great God of the Oceans so powerful that he was said to be the next god to ascend into a supreme god was greeted by this spiritual entity.
"So you don't want to hurt us?" He sighed in relief, as he saw through her with his powers. She had a pure heart. The beautiful transparent lady, who was so tall she resembled a titan nodded gently.
"Indeed… I am in dire need of a helper, a vessel to harbor my powers. This world is unstable, I've created a special barrier to cover myself from the impurities, but I cannot showcase all my strength here…" She sighed. "I have come here to stop her… My mother."
"You're telling me that you and others like you came here to stop… someone that came even earlier?" Asked Poseidon in shock.
"Indeed! My mother… She's a woman who has always dreamed of dominating our Plane. She betrayed us and killed our father, and now she had come here after the portal to this world opened. We were about to finally catch her and make her pay for all the things she had done, but she ran away into this dimension. It seems we were late. She has… already found a suitable vessel and is using him to gather materials for her own goals." Sighed the spirit.
"Hm… Who do you think it could had been?" Asked Poseidon.
"We don't know, but I can track my mother's spiritual essence… She has moved into the farther areas of this world." Said the spirit, using her spiritual waters to shape them into a large map of the entirety of Genesis, her abilities allowed her to just scan the entire place.
"Incredible, you can scan the entirety of this world in just a thought?"
"Yes, it is not so hard, sir… Here, look."
Poseidon looked the area that the spirit told him about… this was without a doubt the far away territory of the Aesir Family of Gods, led by Odin and his son Thor, and their many other relatives!
"The Aesir?! Do they want to do something with the power of the Spirits from the Spiritual Plane?!" Wondered Poseidon.
"I don't know the details, but they might be cooperating with mother for her nefarious purposes…" Sighed the spirit.
"Certainly… recently, Odin was seen attacking Freyr and then Freyja." Said Poseidon.
"Oh no! D-Did he took something from them?" Wondered the spirit.
"He… stole the Yggdrasil Branches, and has been stealing all the ones spread in other Realms, even killing gods in the way if they opposed him." Sighed Poseidon. "I have one, but it is inside of my divine realm and it seems that he doesn't know this."
"Yggdrasil… Branches? What's that?" Wondered the spirit.
"They're giant trees that grew out of branches from a mystical tree that once grew in our original world before it separated into pieces… It contains incredible spiritual powers. Its sap can heal most wounds both in soul and body as well, although it takes hundreds of years to produce it." Said Poseidon. "Could your mother have something to do with Odin's moves? What does she wants with these Yggdrasil Trees?"
"T-That's… Maybe she knows a way to use them somehow…" Said the spirit. "I am sincerely sorry but… there's not much time! My siblings are spreading across the Realms of this world, and had already contacted other Gods… Could it be possible for you to lend me a hand? It is not only a personal problem for us, but it also involves your world… I will try to compensate as much as possible! There are many powers and special treasures in our original dimension that could be useful to you."
"Hm… The future of the world, huh?" Poseidon looked into the skies of Atlantis, seeing through the clouds and into the Astral Road, his eyes reached the Realm of Helheim, where the Supreme Gods were battling against Hel and her forces, just for the same thing, to save the future of the entire World of Genesis…
"I suppose I also have to give a hand." He said. "My brother Hades… Where is he? He's also someone strong."
