The Zero Cycle:
In the beginning, there was only Ulta. And from nothing, Ulta created the Ultaverse, an expanse so vast that Gods needed to create laws of math to attempt to explain it. The Ultaverse contains a number greater than infinite amount of Omniverses. Each Omniverse has an infinite number of universes inside and are controlled by a supreme God. One such Omniverse had all of fiction and more. Ulta created three Gods to control the Ultaverse's three planes of existence; Aruel controlling the Physical Plane, Kahl-Sin controlling the Astral Plane, and Fate controlling the Metaphysical Plane. However, along with the Ultaverse, there was a byproduct; Armageddon, the end of the story destined to destroy everything Ulta created. Armageddon was not yet needed in Ulta's vision of perfection, so Ulta created a fourth plane, the Afterlife. And Ulta also created Gleis to be the supreme God of that plane. The Afterlife is made up of the Funnel, which is a magnet to keep Armageddon in The Abyss - the second layer from which there is no escape. The Funnel, however, also brings in the souls of dead Gods and people not tethered to a religious afterlife such as Heaven or Hell, giving Armageddon a power source. Kicking off the Zero Cycle.
Sousuke's buildup begins in the omniverse containing all of fiction and the real world with two Gods of creation, Ap-Kalu and Errazom, getting fed up with Aruel, who ruled over the omniverse with an iron fist. Aruel is a perfectionist, his mind is set on making sure Ulta's vision is seen through no matter what. And Ap-Kalu and Errazom begin trying to make a human blueprint that can take a little of Aruel's power and grow it to insane proportions. With the help of Oorak, God of Time and Space, they make two successful human fetuses. They put the fetuses in women from two different universes, one being in the real world. And that's when Sousuke Kobayashi is born.
Sousuke was born into a loving family, he had a brother, good grades in high school, the body of a Greek statue, and a genuinely lovely girlfriend. All until he was ripped away from his perfect life at the age of seventeen by a rift created by Oorak to begin his Wacky Adventure.
The first rift takes him to a world of two groups of titans at war, the benevolent titans and the evil titans. Sousuke is taken in by the good titans and is trained for a year straight to use a sword the size of a car. The sword was called the Goliath Greatsword, and Sousuke used it to kill Errazom,
