Bucharest, Romania.
In one of the houses within this city, there was a woman dressed in a revealing dress, standing within the room with a worried and melancholy expression.
The name of this woman was Reika Rikudou.
She was born as an ordinary person in Japan.
Reika is 23 years old. She is an alluring woman with long greyish-green hair who looks like she can "drive men mad with a single expression of melancholy."
Reika grew up without an actual family, and she suffered from abuse before being adopted. She was unable to do anything for herself during her childhood, and eventually became a prostitute simply because she needed money to survive.
She is a woman who finds inherent worth in neither her own life nor that of others and has lived merely by allowing herself to be pushed along by the flow of things. Though she can be said to possess a morality becoming of a human being, the morality she possesses seems in some way flawed, especially after she begins their murdering spree, she has something close to madness in her eyes that drives others away.
As a result, although Reika has no talent as a Magus, and as a master of a servant, her affinity with Jack the Ripper is very high.
Before the Holy Grail War, Reika was a prostitute who lived with Sagara Hyouma, a Magus from the Yggmillennia family.
Sagara wished to summon Jack the Ripper as a Servant, but he failed to do so even with her six knives as the catalyst. He concluded that he needed a better catalyst to summon Jack the Ripper.
Sagara quickly decided to use Reika as a sacrifice.
In his attempt to summon Jack by killing her, Reika's wish to live was what brings Jack into the world.
While Sagara was the proper Master with Command Spells, Jack the Ripper quickly showed that she has concluded that Reika was her Master instead.
Before Sagara could tell Jack to commit suicide after realizing something was wrong with the situation, she incapacitated him by cutting off his jaw and his hand where the Command Spells were located.
Then Jack used her skills to stitch up both their wounds while Reika was unconscious.
After Reika awoke, Jack explained the nature of the Holy Grail War to Reika upon arriving at her apartment.
Jack was able to transfer the Command Spells from Sagara's hand to Reika, but she wasn't a Magus or a proper Master.
Because of that, this required her to devour souls in place of being unable to restore Magical Energy from her Master.
After a lot of things that happened, Jack used Sagara at Reika's suggestion, and they decided to participate in the War together.
It was because of this that it was natural for Yggdmillennia to lose the news about the Assassin of Black and Sagara.
Even the people that were sent by the Yggdmillennia family were also killed by Jack the Ripper.
Out of all the participants of the Holy Grail War, Reika was probably the only ordinary person without knowledge regarding magic until she decided to join Holy Grail War.
So in this room, Reika raised her hand where the Command Spells were located as she ordered.
"I command you, Jack the Ripper, to come back to me."
The Command Spells are three claims of absolute obedience, the crystallization of great magic, that a Master has over a Servant in the Holy Grail War system.
Mostly, it was used to control the servant of the master, however, it could be used to save the servant by forcefully returning to the location of the master when the servant was in dangerous situations.
Along with the brilliant light, the Command Spells on Reika's hand dimmed and part of the Command Spells on her hand dissipated, then a space in front of her started to distort.
Immediately, Jack the Ripper was forced to summon back by Reika.
When Jack returned, her entire body was weak and she plopped on the ground with a dazed expression.
There were no wounds or blood on Jack's body, but Reika could tell that Jack's state of mind was a bit weird.
"Jack, are you alright?"
"......"
Jack shook her head and felt her body was quite weird, but then she asked, "Mom, do you know Tokyo Disneyland?"
"Tokyo Disneyland?"
Reika was surprised by Jack's question, but she nodded. "I know that place."
"Have you been there before?" Jack asked with a hopeful expression.
Reika smiled and shook her head while patting Jack's head. "No, mom hasn't been there since mom is very poor and it makes me uncomfortable to go there." In her childhood, she might have wished to go there, have a normal family, have fun with her family, and have a normal childhood. She wished for such a thing in the past, but she knew that it was impossible now.
"Why does mom feel uncomfortable going there? Onii-chan has told us that place is very fun, is Onii-chan lying to us again?" Jack frowned since she knew that Haru seemed to love to tease her.
"Onii-chan?" Reika looked at Jack curiously.
"Yes." Jack nodded and said, "He's a master in the Holy Grail War and he has told us to call him Onii-chan." She chuckled and said, "He was so weird. He knew about our identity yet he didn't seem to be unfazed by it."
"....."
Reika wasn't sure what to say for a moment, but she asked, "So he has told you about Tokyo Disneyland?" In her mind, the fact that the "Onii-chan" in Jack's mouth knew about Tokyo Disneyland was even more shocking than knowing Jack's true name.
Jack nodded and said, "Yes, he has told us that place is very fun and he has promised to take us there."
"......"
Reika was confused since, in her mind, Holy Grail War was a place where a master and a servant fought each other, but then her expression turned grim and asked, "Has he done something weird to you?"
"Weird?" Jack thought for a while and said, "We're not sure, but that Onii-chan's hands emitted a pink light."
"Pink light?" Reika was confused, but then she felt relief that Jack didn't meet a pedophile.
"Yes, that pink light was so weird since it made us feel great, but at the same time..."
"At the same time?"
"We feel that we might not be able to meet mom anymore."
Jack hugged Reika and snuggled into her.
Reika was wondering what kind of magic was used on Jack, but she didn't know about the magic that much and there was no way that she could help Jack.
"Mom, I want to see Onii-chan again," Jack said.
Reika smiled and said, "If that's your wish then mom will help you."
"Thank you, mom!" Jack smiled and felt that Reika was the best!
Reika wasn't sure who this "Onii-chan" was, but she was also curious about him.
"I wish to return to you, mom," Jack said.
Reika might not have realized Jack's meaning was for Jack to be able to enter her womb again. However, even if Jack wanted to cut her stomach to enter her womb, she didn't care and happily accepted it.
That was how distorted the two of them were, on the relationship between two of them, another person entered and caused some reaction whether that reaction was bad or not, no one knew for sure, until both daughter and mother met that harem protagonist again in the future