The flames engulfed Gilgamesh and evaporated him completely. Ian calmly put away Clairvoyance, and then quickly walked out of Reality Marble.
"Did you win?" Tohsaka asked.
"Of course," Ian replied with a smile. "Didn't you say you wanted to see that Floating City? This is your chance."
"Really?"
"Hurry up, we don't have much time." Maintaining Reality Marble requires a lot of magic power, and his current incarnation cannot sustain it for too long. Ian looked at Illya), "Come here too."
"W-Why?"
"I need to take out Holy Grail from your body and make sure you don't die."
"Is this possible?"
"He is Arcane Emperor. If anyone can do it, it must be him," Tohsaka said, and Illya finally agreed. Ian took them into Reality Marble and came to a laboratory in his Floating City. He ordered a Golem to show Tohsaka around, while he went to help Illya.
"Don't be afraid," he comforted Illya who was lying on the experimental table with a magic circle painted on it. "Although you were born Homunculus naturally, this cannot change the defects in your genetic structure. Therefore, you will not live to be thirty years old, and this does not take into account the burden Holy Grail has placed on your body and soul."
Despite hearing these cruel words, the child Illya seemed very calm. That was because she had known for a long time and was mentally prepared for her early death.
"What a brave child," Ian sighed. No child should live under the shadow of death. "After I take out Holy Grail, I will reshape you into a normal, healthy body. I will also heal the damage Holy Grail caused to your soul."
Illya just nodded, then Ian asked, "Do you have any questions?"
"Will it hurt?"
"No. It feels just like taking a regular nap." With the state-of-the-art laboratory in Floating City, Ian can easily control pain.
"Okay."
Ian immediately started to take action. Illya fell asleep. Not long after, a strange aura that resembled black lightning came out of her body. A golden cup covered with black mucus slowly rose from her body: this was the contaminated Holy Grail.
Ian waved his hand and led Holy Grail to another room. At the same time, Illya's body decomposed and then reshaped itself exactly. From now on, she will be just an ordinary girl.
Ian quickly began to analyze Holy Grail. This thing is a huge source of magic power and contains wish-making magic. Ian and Empire had studied wish-making magic, which they discovered in the ruins of Lemurian Civilization.
There are two conclusions about this kind of magic: the first is that higher-dimensional beings are entities that grant wishes; the second is that wish-making spells are a form of pure manipulation of reality.
Armed with his knowledge, Ian went to work. He isolated the contamination from Holy Grail, learning from Gilgamesh's lessons and ensuring that his own character was not secretly affected.
Then, using the huge magic power and the ability to make wishes, Ian broke through his limitations as a servant/Servant, and finally obtained a real body.
"Although it's still not as good as the real body, it's better than being a spirit," Ian commented. Then he looked at Illya and Tohsaka; the two girls became familiar with each other because of their sisterly friendship, so he didn't bother them. Then he dismissed Reality Marble, and the three returned to Illya's mansion.
"This is more exciting than I thought," Tohsaka said. "Can't you wait a little longer?"
"Even with a new body, I don't have enough magic power to maintain this level of Noble Phantasm for so long," Ian replied.
"So, you succeeded?"
"Of course," he replied, then looked at Illya. "Do you want to go stay with your brother?"
"Is that okay?"
"I believe he will be very happy." Although Ian did not like Shirou, he knew that Shirou would do his best to take care of his adopted sister, even risking his life to ensure her safety. So, he took her to Shirou's house and explained the relationship between them.
"I really didn't expect you to do good things for Shirou," Tohsaka commented after returning home.
"I did it for Illya," he replied. If it were up to him, he would even Resurrection her mother, because she deserved a better ending than she did in <Fate/Zero>. However, Ian didn't want to face the trouble of finding her soul in this complicated world.
"Whatever you say. What to do next?" Tohsaka asked.
"I will keep my promise and teach you magic. I also need to borrow the basement of your mansion for research. After doing this, it's time for me to leave."
"You want... to leave?"
"Although it will take some time, but yes," Ian nodded while looking into the distance. The atmosphere in the room suddenly became dull, until Ian spoke again:
"What are you going to do with the Magic Association? Are you going to report that Holy Grail War is over?"
"I don't have to go, but I have to go. This is a great opportunity to expand the influence of the Tohsaka family."
"You can tell them that your wish is to improve your strength and show them your brand new Magic Circuits."
"Good idea."
Tohsaka set off for the Magic Association's headquarters - Clock Tower. At the same time, Ian transformed the basement of the mansion into a barrier for research. His Floating City cannot exist without Reality Marble, and maintaining the barrier consumes too much magic power. Therefore, he must build a new laboratory to study Ea and Chains of Heaven.
Three days later, Tohsaka came back and went straight to the basement. "Is it done?" Ian asked while doing the final finishing work in the laboratory.
"Well. The Tohsaka family has now officially become one of the most powerful magic families in the world." Ian nodded without comment. He knew that this title was of little significance because the world was very complicated and full of hidden secrets.
"I guess those families are rushing to marry you, right?" He said, adding a new enchantment. "I bet some families are even willing to let their clansmen marry into the Tohsaka family, as long as you agree to adopt the second child to them."
Tohsaka's mouth twitched, "Yeah, it's annoying."
"You have to be careful when dealing with these people. Some desperate families will do whatever it takes to ensure they have a gifted heir."
"I know," she replied through gritted teeth.
"So, someone has already tried it?"
"They put drugs in my drink. I almost beat them to a pulp," Tohsaka said.
"You can actually use a curse to sterilize them; it's a much better way of revenge than beating them."
"That makes sense."
"Okay, let's start training," Ian said. "While teaching you Arcane Runes, I will also train you to control magic power. Every time I see you cast spells, it makes my eyes irritate."
"It's not that bad."
"I've prepared a virtual reality helmet and the necessary Potions for you. Don't expect to get much sleep in the next few months. We don't have much time, and you have a lot to learn."
Tohsaka paused suddenly, and then walked towards the designated machine. The training lasted for three months, and Ian finally admitted that she was a qualified mage. However, in the first month, she did not sleep once or eat a meal, all relying on Potions. What Luck did was that in the second month, he allowed her to go to school and live a normal life.
Ian looked at his research results and couldn't help but frowned. Just because of the existence of Chains of Heaven, his decision to come to this world was extremely correct. This Divine Artifact is a Anti-Divinity Weapon, just like the magic of Asta is Anti-Magic. Furthermore, there is almost no upper limit to this thing; the stronger the god, the stronger its binding force.
With it, he was confident that he could at least imprison Time Custodians if caught by surprise. However, he had not completely reverse-engineered this Divine Artifact, and he did not know if he could leave this world with it.
Ea is indeed a weapon of destruction as he expected. Just like Chains of Heaven, to build his own weapon, he still lacks the last piece of the puzzle: he must find Source, and the only way is through True Magic.
'So that's it,' Ian thought. 'Akasha allowed me to enter this world because it wanted me to create Sixth Magic to add more possibilities to this universe. No, if you look at it from a grander perspective, maybe Akasha has known about the war for a long time and hopes to prepare her world for the coming chaos.'