Yuuka had already left Academy City years ago. Now the flow of events went back to their usual flow with time. Accelerator was already a grown man, he still shared his home with Last Order while Misaka worst left to seek a future on her own. The gods were trying more than ever to finish the science world, the war was nearer every day.
Now the alliance between the church and the gods was open, which meant they were united against their common enemies. Gensokyo, Academy City and the Moon Capital were together too in open political treaties. Though the treaties were more beneficial for Gensokyo while the Moon Capital offered no help under most conditions. Humans where free to flee their world and join Gensokyo in case of war. It seemed unfair but Aleister had no other choice.
Amaterasu cared for human survival but the political pressure of True Gremlin forced her to take position as its enemy. Yuuka seemed to be human's triumph card for very long until they realized she was not there to defend them, she only wanted to make humans capable of defending themselves. After finishing her job she left them on their own. She still visited some friends in the outside world but she took no action to solve human problems.
Accelerator was the only person who stood Yuuka's training. Hyouka had learned some things too but she was not willing on putting such a burden in others. In order to ensure secular human survival Accelerator agreed to teach other ESPers, he was just as ruthless to them as Yuuka was with him. However no person complained since everyone agreed that those methods worked.
Some years later Accelerator married Last Order, she was the one who asked for it. She was now old enough to understand her feelings, and realized she wanted to marry Accelerator. A year later she was pregnant, though the baby wasn't born in 9 months but in 3. Last order was shocked, she was depressed to see her baby dying without much to do. Though the baby was healthy, it was a miracle.
Later on Last order and Accelerator understood the reason why their daughter was born in such a short period. She was capable of moving time at will, Accelerator could change every variable in a vector but time, his daughter could do it with ease. It later became obvious to them that the child could control space as well, practically that made her power the extended version of Accelerator, she could change every single variable in a vector, she didn't even have to touch them.
Though to change spacial dimensions to change a vector was something far more complicated for the girl than for the father. The more powerful you are the more difficult it becomes for you to control it, to narrow things down gives you more self control but less freedom.
Last Order had no names thought for the kid if she was a girl, in case of being born make her name would have been Touma, many Misakas in the network seemed to like that name. While Accelerator got to pick up the name and chose Yuka. The surname was Mikoto since Accelerator had none.
Religion was organized into a single unit too. Italy was the first country where its government became completely submissive to the Vatican. The tibet conquered China and became a sub state of the Russian Orthodox empire. Protestants agreed to join the Roman Catholic Church in exchange for being able to keep their rules different. So now America, Europe and Asia were together in a single religious government, where the Cardinal council was the head of it. They were strong united, the gods lent them help too, but Lunarian technology was just as scary as Academy City's, Gensokyo was a land inhabited by weapons of mass destruction.
Accelerator was the General in charge of the ESPer army. He had a deep loyalty to Yuuka and he responded only to her orders, though she had became more distant with time. She only cared about her garden and lived alone with her two gatekeepers inside of Mugekan. She was the Lady of Gensokyo who cared less for this war. She only wanted humans to be capable of defending themselves, once they had that knowledge she left them on their own.
Mikoto Yuka, she grew up with legends from Gensokyo, the paradise land for those who weren't of god's liking. How it slowly became one with hells and heaves, how it absorbed many worlds. Nowadays Gensokyo and the Moon Capital were under different governments but shared resources. Academy City now depended more on those two fantastic worlds more than Earth's government.
She learned too about the demon who she shared a name with. To most humans she was considered one, to those close to her she was a god whose methods were not morally correct. Some members of the church who were captured had confessed that they would kill any person from Gensokyo but Yuuka, those who were close to her, even those who were her enemies considered her holy.
One of the gods was specially against the Youkai Union, Hecatia Lapislazuli, a goddess of hell under the service of the Dark King, Tezcatlipoca. Those humans against the church feared her more than anything, she seemed to be immune to anything they had for her. She had the power to be in many worlds at once, but she kept her soul in hell, those bodies in the outside were capable of regenerating without a problem while in fact Hecatia was never in true danger.
Yuuka in a rush of recklessness, boredom and love for humans had asked Accelerator to go to hell and get rid of Hecatia. There were many ways inside of hell, but walking into Mugenkan and following the path of Yggdrasil's root was the easiest one for him. His wife and daughter didn't feel much worry for him, Hecatia was strong but he was considered a demon by gods themselves. The one who held the power of a god went to face a god itself.
Ending Hecatia would end the war, or that was the main trend of thought after seeing she was the only god who hated secular humans that much. Accelerator left being considered a hero, everyone waiting for his return and celebrate, but he never did, as the years went by the hope started to diminish. The way to hell was long but not that long anyway. Last Order and Yuka were not certain of his death until they received a package, inside there were the bones of the person they were waiting for.
Days later humans started receiving messages from the gods. Tangaroa was killed years ago but it was Yuuka who did it, they could do nothing about it but to attack her directly, that would mean war. Accelerator was a human and that was a sin of the worst kind. He indeed won against Hecatia, but he had to hide in hell for much time, in the end Yama herself found him and gave him the proper punishment; death.
Yuka tried to find consolation on her mother but she was just as devastated, that cold man was very loving to his family. Now they were on their own, the pity from others was too much to bear. Yuka prove to be the strongest of the two when she walked back from the grocery store to her home. The door was open but her mother was nowhere to be seen, maybe her mother was asleep, she had been sleeping a lot lately, a sign of a depression they had to attend soon. She decided to let her mother sleep in her room without entering, it would wake her up and bring her back to this horrible existence.
According to Last Order she talked to Yuuka in her dreams, she was very alike Accelerator in some senses, enough to bring her peace. Though this time she wasn't talking to the lady of Mugenkan, later that night, when dinner was ready Yuka found her mother cold and peaceful in her bed. There was an apologizing farewell note, and an empty flask of liquid klonopin. At least Last Order had gone peacefully. The Misaka network had done the same thing, unfortunately Last Order shared her sadness to her kind.
Yuka decided to leave to the fantasy land her father spoke about, the people were speaking too much about her. They talked about the daughter of the hero who calmed the gods down, and the woman who caused a mass suicide. Unfortunately some Misakas didn't chose a death as peaceful as their server.
Though in Gensokyo anyone minded her origins every youkai feared her. Yuuka's shadow was upon her, they knew she was raised by her last student. The shrine maidens were the only ones who spoke to her, they treated her like they knew her. Two things were made clear, she was not allowed to go into the Scarlet Devil Mansion by any means. She didn't understand why but she obeyed them anyway, their fear was so great she decided not to go.
Another was that Accelerator's fate was set since he accepted studying under Yuuka's wing, her last student and the ones before had the same fate, died doing impossible tasks and became heroes for history. Reimu's mother had slayed the dark demon Kali, and therefore avoid the end of the era of Kali Yuga, though she gave up her life to do so. Yuuka trained people so well they were capable of changing the course of history, to make the prophecies useless. Though all of them gave their lives at following her suggestions.
The problem was that she had nowhere to stay, shrine maidens were not particularly living in spacious homes, while Marisa liked to experiment on dangerous thing, to top it off she had a Jupiter Missile she called "Mimi-chan" in the basement. The only one who took her in was Yuuka herself, though she took an interest for Yuka. She wanted her to become one of her students too.
During those times she started to develop the ability to see her own time, the stay in Gensokyo had unlocked some of her potential. The fake ESPer Yuuka was teaching her without even trying, and her visions made it clear that she had no other way to live but that one. One day she would die too under her orders, and she would follow them without hesitation, even with full knowledge of her death.
Yuka decided to find another way, and eventually she did, if the present made it impossible to her to survive she was going to escape from it. She traveled to the past, something she never tried before, but her existence in the present stopped being, she started living during the times where technology didn't present a threat to the church.
She kept her name and nickname given to her by her ability back in Academy City (as any other lvl5 would have), Yuka Mikoto and Lunacy Dial. Though she was better known for the later one. Though she did many things the one she is remembered mostly about is for slaying demons. She wanted to make sure the world in the future didn't had demons nor evil gods.
Slowly she became one of the most feared hunters in the world, she started to specialize in the ones people feared the most, vampires. Youkai whose existence depended solely in human death, she knew she could not take on the Sleeping Terror anyway. During those times she was considered the goddess of nature, facing her would mean at best the fate her father had. She went to Europe where an outbreak of pest started to hit, there she found out the cause was as she imagined one of the members of vampire aristocracy. Vlad III, of the Draculesti family, a Romanian prince whose cruelty became famous during the eras.
The story of his death was well documented though Yuka's identity was hidden under the name of Abraham Van Helsing, she didn't want to be very well known among the Vampire community. The church though knew her well and respected her doing. She decided to live in England in the years of peace that followed. She then decided to change pace and left for China in the years of imperialism.
She lived at Hong Kong and became a clock merchant, she was known for only selling the best. It was there where she heard about a dark mansion everyone feared. In the north there was the rumor of an English lady who was just as cruel to humans as Vlad. The behavior was very well known to her, a vampire lived there.
The mansion was located at the outskirts of the city. The locals' fear was something that proved her idea, the name of the mansion made it more than obvious. It was the same mansion Reimu prohibited her to visit, The Scarlet Devil Mansion. Such a demon had to be very dangerous for her not to be allowed, she could read her fate and saw how easy it would be for her to kill the vampire living in there.
How wrong she was, she didn't imagine the lady of the mansion could control the same thing that allowed her to win. Remilia Scarlet could control one's fate as will, when she fought against her Yuka could see how easily Remilia could fool her prescience, at times she even made fun of her ability. Remilia changed her fate with each move, from getting married with her to killing herself just because.
At least Remilia wasn't the one who did all the slaying, she found out it was her little sister, Flandre Scarlet. Remilia even tried to keep her in control, she had to live in human blood but she preferred not to kill them, she didn't mind murder but she preferred not to do it. If it wasn't for her abilities Yuka would have died under Flandre's hands the second they first met.
In the end when Yuka was too tired to continue and passed out Remilia locked her fate. She awoke inside of the mansion completely unharmed, Remilia was kind enough to nurse her back to health. Though when she realized the reason why she understood many things too. She was to be Remilia's servant for as long as both of them were alive, she saw those futures where she tried to revel and understood that changing fate would have gruesome consequences.
Remilia also changed her name, Yuka Mikoto didn't seem fit for the new head maid of the Scarlet Devil Mansion. She was now to be known as Izayoi Sakuya, the maid Remilia Scarlet always wished for, powerful and smart enough to see she had no other option but to follow her duties.
Later on they saw the Opium war and survived the social pressure of their nationality in a land that hated them. Another huntress decided to come and take on Remilia, though this time it was Sakuya the one who defeated her. Remilia took a liking for the Chinese girl who tried to finish her, and changed her fate too. Sakuya managed to convince her to accept her new fate and try to live as happily as she could with it, but the girl did it only under the condition of keeping her clothing. She was a red guard with the name of Hong Meiling, a master of Xinyi she was the best in the area at her job. For that she was turned into the gatekeeper of the mansion.
Soon after Meiling's addition to the mansion Remilia decided to move the mansion to a new world where demons could live freely, she had heard it from her best friend Patchouli Knowledge, an English magician who was raised from birth to be an encyclopedia of forbidden books, her poor health allowed the Anglican Church to keep her in total control. She started a mail friendship with Remilia, they became such good friends that Remilia (whose ability was unknown to Patchouli) changed her fate to be free to do whatever she wanted. Patchouli went to live with her friend when she escaped from the Anglican church.
Sakuya didn't know Index very well, she had heard of her but never really had a close talk with her. The only thing she knew about the nun was that she and Touma were in a relationship where none of them admitted it but rejected any romantic action with anyone else but each other. She also knew about Index's name origin, she was an encyclopedia who had a heavy conditioning to the church in the beginning. Now she understood why she was so conditioned in the first place, Patchouli, their first Index Librorum Prohibitorum escaped and joined a demon.
Also in exchange Patchouli set a spell where it didn't allow Flandre to escape the mansion, not until she was mature enough to leave without causing a massacre. A great rain would fall when she left the mansion leaving her paralyzed, Sakuya could very easily retrieve her back into the mansion.
Patchouli informed Remilia about the fantasy land known as Gensokyo and suggested the moving of the mansion to it. It would be easy with Sakuya's space handling power, Patchouli set the exact coordinates where the castle could be located and Sakuya moved it with ease. The youkai at Gensokyo didn't mind the invasion of the land, they even welcomed them. Sakuya kept her former knowledge about Gensokyo to herself, its future too, she could not tell it to anyone, not yet.
Sumireko was the first person who it was convenient to know about Gensokyo, because her daughter Renko was the one whose fate was to become Accelerator's successor as humanity's protector.