Yes.
The Toosaka family, the administrators of Fuyuki City, are relatives of the famous Edelfeldt family of Finland. Toosaka Rin and Luvia are distant cousins.
This is the secret that Shinji had just learned from Kariya not long ago, a secret hidden by the Edelfeldt family.
The Tosaka family and the Edelfeldt family had no intersection until the Third Holy Grail War in the 1930s. That was the largest Holy Grail War in Fuyuki's history, and it was also the divergence of the world line and the turning point of everything.
The Edelfeldt family, treasure hunters, got news of the Holy Grail from somewhere and intended to take it for themselves, so they sent the family heirs, the modern twin sisters, to this end.
As a result, the sisters turned against each other, the younger sister died in the war, and the elder sister returned to Finland alone - but this was only a unilateral announcement from the Edelfeldt family. In fact, the younger sister did not die. She stayed in Fuyuki City after the war and became the wife of the head of the Tosaka family at that time, that is, the mother of Tosaka Tokiomi and the grandmother of Tosaka Rin.
This also explains why the founder of the Tousaka family, Tousaka Nagato, has black hair and black eyes, while Tokiomi and Rin's eyes are azure, the same azure color as Luvia.
The reason for announcing her sister's death in battle is unknown. It may be that the elder sister lied to the family for the sake of her sister's happiness; or it may be that the elder sister was completely disappointed with her sister and severed the relationship in this way.
Shinji tends to be the former, because the sisters of the Tosaka family and the Edelfeldt family are all sister-con. Rin is very good to Sakura, and Luvia is also very good to her sister. Moreover, in the parallel world, after the decline of the Matou family, Sakura was eventually sent to the Edelfeldt family and became a twin partner with Luvia, most likely because of the sisterhood.
To this, Shinji just wants to say that if we are not from the same family, we will not enter the same door.
There are two ways to deal with Luvia in this state: either let her vent her emotions or wake her up.
If he makes her happy, Shinji himself will be unhappy, so I can only say sorry.
"Ms. Luvia, please stop the magic immediately, or I will fight back."
What responded to him was a super curse bullet as big as his head.
Faced with this blow that was enough to kill someone instantly, Shinji still had no intention of dodging, and even said something to Gray.
"Gray, open your eyes and see clearly."
While speaking, Shinji raised his right hand, put his five fingers together, made a knife-like shape, and gently waved it in the air.
With a burst of air explosion, the curse bullet exploded, and the negative curse and compressed magic power contained in it permeated the air, forming a brief mist between the two people.
Luvia immediately took out a light green gem and poured out magic power to manipulate the atmosphere.
Before she could dispel the fog, a dark shadow passed through it. It was Shinji.
"Call."
Luvia made a prompt decision to give up dispersing the fog, and used all her magic power to compress the air into a barrier, blocking Shinji's approach.
Shinji neither stopped nor changed direction, but just moved straight towards the barrier. His hands, infused with magic power, were like two hammers, violently blasting away the barrier. He was only one step away from getting in front of Luvia - one could imagine the consequences of being so closely hit by a humanoid Tyrannosaurus.
Luvia was waiting for this moment. She had intentionally strengthened her physical defense when building the barrier. Although Shinji showed great strength and speed, his speed would inevitably be affected when he tore through the barrier. This was Luvia's chance.
The moment Shinji felt the reaction force of the barrier being broken, Luvia moved.
She casually threw the gem that had been shattered into powder due to the exhaustion of magic power into the air, attracting everyone's attention while opening her arms, lowering her center of gravity, and hitting Shinji's side before he took a step. The two seemingly slender but actually strong arms tightly wrapped around Shinji's waist like iron clamps.
"Don't underestimate the 'treasure hunters' of the Edelfeldt family!"
Amid the condescending voice, Luvia exerted force with both hands, and was about to throw Shinji headfirst, a formal Lancashire school's signature "Catiddot;Catch·".
However, Shinji's lower body was incredibly stable, his legs firmly rooted to the ground.
"Ms. Luvia, how could I not be on guard now that I've mentioned your nickname? You seem to be good at wrestling? Excuse me, I'm good at it too."
As he spoke, Shinji elbowed Luvia in the back. The force was not strong, but it made Luvia feel numb and her hands loosened a little.
Taking advantage of this gap, Shinji put one hand on Luvia's shoulder, grabbed her belt with the other hand, lifted her up with his backhand, and threw her towards the observation deck on the second floor.
There stood the last guest, or rather the "person other than the guest".
White fingers traced the English oak handrails and stared over here.
Woman wearing glasses.
Her black hair was much longer than Luvia's, reaching her ankles like a black waterfall, and she was wearing a national costume that matched her long hair.
The woman waved her long sleeves painted with bright flowers, like two colorful clouds, and lightly caught Luvia who was about to fall.
"Hey~ A Yuzen silk furisode kimono. I didn't expect to see clothes from my hometown here." Qingxuan, who was born in Japan, stroked his chin and nodded to the black-haired woman.
The woman put Luvia down in a dancing position and said to Shinji, "Nice shot."
"Excuse me, this is Mongolian Bock."
Shinji swung his arms. He originally wanted to respond with the "Pankrasin" etiquette, but he was not Shinji now, but Shen Zhong, so he could only talk about an oriental wrestling technique he knew.
The woman rolled her eyes expressionlessly. The butler who had just greeted everyone in front of the main city had moved to the woman's side without her noticing.
"My name is Kakino Hishiri, and I have been appointed by the Clock Tower Law Department to be the administrator of the estate of Grivin Ashburn."
The magicians were in turmoil again.
"... Hey, why is it the Law and Politics Department?"
"... these heretics who have confused means and ends."
The Law Department, this is a word with a special meaning to them. Except for freaks like Shinji, no one wants to be associated with that department. Even Luvia, the focus of the whole scene, put down her pride in front of the Law Department.
Hishiri looked down at the magicians below and took out a letter from his bosom.
This letter was very similar to the invitation letters that all the guests had received—however, next to the Ashburn family seal on the seal, there was also the seal of the Clock Tower Law and Politics Department.
"So-"
The woman opened the envelope in front of everyone and announced.
"The last words of Griffin Ashburn are hereby published."
"—Ask the name of the angel."
The woman's voice carried a strange magic, making people seem to see a very nervous old man half leaning on the bed. That was the former mayor of the "Stripped City of Adela" - Griffin Ashburn.
The old man used up all his strength to say his last words.
"Those who cannot answer the question will be stripped by the angels."
It was like a spell, the final spell of the magician who had collected so many angels, awakening the city.
Rustle, rustle, rustle, rustle.
It seemed as if angels were floating out from the floor, walls, and ceiling like bubbles, and this illusion could not be dispelled no matter what.
In this scene that seemed both real and illusory, the voices of the woman and the old man overlapped and spoke the decisive words.
"He who holds my angel in his hands shall inherit my legacy."
PS: There is no conclusive evidence that Rin's grandmother and Luvia's grandmother are sisters, but Toosaka Tokiomi did say that his family and the Edelfeldt family are distant relatives. Combined with the issue of eye color, personality, and a series of hints, this guess is most likely correct.
PS2: So hooking up with Masters of the opposite sex is actually a tradition of the Tohsaka family. It's a pity that there were no female Masters in the Fourth War, otherwise would Tokiomi have also hooked up with someone
PS3: I bet that when Mita Makoto was conceiving the concept of Kanono Hishiri, he must have referred to the image of a 30-year-old Shiki-sama, with long hair hanging down to the ground and a kimono covered with embroidery - you can refer to the fully broken card of FGO for details.
PS4: Do you feel that Luvia's spell, call, is like a loli from the Dragon King's house? call, call, call...