Solomon_■■■■■■ had scattered numerous faulty, unusable Holy Grails across the space and time, hoping to be rid of them. In other terms, these Holy Grails had been sent to different worlds outside of Alaya’s universe. To his surprise, at least one of them was still functional enough to create a Strange Singularity. Realizing he could use this to his advantage, Solomon_■■■■■■ sent his Demon God Pillars into these Strange Singularities to oversee their growth. Solomon_■■■■■■ also began to slowly bring these Strange Singularities onto the Proper Human History, confident these Strange Singularities would be as effective.
For this Strange Singularity, this is actually a virtual world created by the Holy Grail. It had originally manifested in a parallel world Japan, which had for some reason has allowed for the summoning of improper Heroic Spirits. What has been summoned are the virtual avatars of Hololive into self-aware Servants. These “VTuber Servants” are informed by the Grail that if the Strange Singularity ceases to function, they would no longer exist as well.
The Demon Pillar Andras is responsible for initiating the Holy Grail War. Through the war’s mediator Sora Tokino, Andras claims by winning the war and claiming the Grail, the winner will be able to reincarnate into a real person. The losers would simply fade away and never grasp the chance to be given a life of their own identity. This forced the chosen VTuber Servants, alongside a few Heroic Spirits from the Proper Human History, to fight for their wish to be reincarnated. They would also reorganize into different factions to have a better fighting chance. Andras had planned to keep the war going as long as possible in order to stabilize and expand the Strange Singularity to destroy the Proper Human History.
However, Andras had never expected to be killed by Haato Akai, who Andras had decided to use as a host. Or to be more specific, Andras was caught completely off guard by Haato’s “evil” personality, Haachama. The latter’s insanity was so powerful that it actually drove the Demon God Pillar mad, which caused Haachama to absorb the Pillar’s power and become HAACHAMA.
HAACHAMA, whether she was still being influenced by lingering remnants of Andras or because she felt like being the villain, had kept the Holy Grail War going and started to use her newly acquired power from behind the scenes. But due to her lack of control and intelligence, HAACHAMA’s powers started to slowly destroy HOLOVERSE (hence the reason for the low Human Foundation Value) and cause the Holy Grail War to go out of control by summoning and entangling Heroic Spirits from the Proper Human History in the Holy Grail War. Luckily, Ina’nis Ninomae was able to seal HAACHAMA temporarily within the Grail. To keep others from using the Grail and releasing HAACHAMA, Ina’nis kept the Grail and began searching for a way to purge HAACHAMA from the Grail.
Even with the Grail withholding the Strange Singularity, the corrupted Grail is starting to become a threat to both the Strange Singularity and Proper Human History due to HAACHAMA’s influence. Whether it be HAACHAMA or the Strange Singularity, humanity’s extinction is near.