Explanation

Illya, Ruby, and Sapphire walked here on the rooftop of Homurahara Elementary School.

"Um, why is Ruby called Onee-sama?" Illya asked.

"That's because Sapphire and I are Mystic Code created at the same time," Ruby said.

"I am Sapphire, this is our first meeting, please take care of me and Onee-sama." Sapphire looked down.

"Please take care of me too, I am Illya." Illya quickly returned the salute.

(It feels so polite~) Illya thought.

"Sapphire~ Your master?" asked Ruby.

"Yes, my new master is Miyu-sama. By the way, if it weren't for Vumin-sama, I might not be able to make a contract with Miyu-sama."

"Eh? Does it have anything to do with Onii-chan?" Illya asked.

"Yes, after I separated from Onee-sama, I looked everywhere for someone who was fated, but I found the magic aura left by Miyu-sama, and then followed all the way to Vumin-sama house."

Illya and Ruby listened intently.

"Vumin-sama house is a very powerful Magecraft workshop. It took a long time to break the outer barrier according to my current situation. However because Vumin-sama allowed me to enter the Sakatsuki Residence, I was with Miyu-sama. After discussion, we signed the contract."

"This… If you say so, Onii-chan is also a Magus?" said Illya with sudden enlightenment.

"Un, Vumin-sama magic power is quite strong, I even thought Vumin-sama was a Servant."

When she first saw Wu Ming, Sapphire was also shocked.

Because Wu Ming didn't hide his magic power and aura, Sapphire easily sensed Wu Ming immense magic power. Even Sapphire guess was right.

After Wu Ming was transformed into Class Cards, he was condensed into his own entity and continued with his own magic power, although it was not the same as the essence of a Servant, it was no different.

But one thing is that Wu Ming has become stronger.

Because Servants and Heroic Spirits in Class Cards are slightly different.

Servants are subject to their own class, master magic power, territory, and other aspects. Class Cards contain the power of the Heroic Spirit. Even though there are also land class and reputation restrictions, they are not affected by the magic influence of the Master.

In other words by relying solely on his own existence, Wu Ming with his immense magic power, all attributes had received the maximum bonus.

Of course, Wu Ming was just a special occasion. After all, Class Cards were originally reserved for use by human Magus. If used by a human Magus, various restrictions will reappear.

Even if Class Cards materialized, it was a subconscious shell, only instinctively attacking pure magic blocks from its own territory, absorbing the existence of the underground leyline.

"By the way, Onii-chan Illya was the one you went to that night?" Ruby asked.

Since the whole family had dinner, Illya didn't bring Ruby but left her at home.

"Un, Onii-chan house is huge, like royalty." Illya nodded, his eyes filled with another look.

"Well yeah yeah, I really want to see Onii-chan who made Illya an idiot~" Ruby started teasing again.

"What did you say!" Illya slapped Ruby shyly, and Ruby dodged quickly.

"Hahaha, having said that, the owner of Sapphire Miyu is also very strong, and she can use (Phantasm Summon) of Class Cards." Ruby quickly changed the subject.

"Yeah, I was surprised at first too. I didn't expect Miyu-sama to be so talented."

"If ~ if there is a strong Magus brother, it is normal to have high talent, but it is really worthy of being a Sapphire, you can find a great Master ~" Ruby said.

With this reason, it could be considered comforting Illya, after all, Illya appearance yesterday was too weak.

"I'm really sorry that I'm not a great master... By the way, what is ?" Illya shrugged, and then raised doubts.

"Un? Didn't Onee-sama explain to Illya-sama?" said Sapphire in a confused and surprised voice.

"Aha…Ahahaha~ I forgot."

"..."

Then, Sapphire told about Class Cards.

"So like that." Illya felt relieved as if she had understood something important.

"Is that the hero in the lege? They are very strong." Illya smiled.

"For unknown reasons, Class Cards do not appear at the same time, and after two Class Cards appear, the Mage Association sends a Magus to recover both Class Cards." Sapphire continued.

Regarding this matter, Wu Ming has also studied with Zelretch, it seems that Wu Ming has different Class Cards, which causes confusion when Class Cards and Miyu appear.

"Class Cards are made of very high magic theory, and the Mage Association sent us to recover Class Cards together with Rin-sama and Luvia-sama." Obviously Sapphire.

"We separated ourselves from them because the two of them couldn't work together. Really, only two are always fighting~" Ruby finally sneered.

"So, how many Class Cards have you collected now?" Illya asked.

"Now that I have taken back Archer and Lancer, plus the Rider Class Cards that Miyu-sama defeated yesterday, a total of three Class Cards." Sapphire said.

"Illya, do you remember the Class Cards Archer that Rin showed you? Those are Class Cards," said Ruby.

Illya remembered the card Tohsaka Rin showed Illya that day.

"Oh, I see."

"Miyu-sama uses Class Cards Lancer, hero Cu Chulainn, son of light in Celtic mythology, spear Gae Bolg, a cursed spear that can hit the heart." Sapphire said.

"Oh!? Is it really that dangerous?!" Illya was a little surprised.

"Of course, after all, these are the weapons used by heroes in legend~" Ruby interrupted while hovering.

At this moment, a voice came.

"Sapphire."

Illya turned to look at the roof door.

Miyu was standing there in her school uniform.

"Don't run, I'm really worried." Miyu said.

Because she had been taken care of by Wu Ming exclusive Mystic Code, Miyu cared deeply for Sapphire.

"Sorry, Miyu-sama." Sapphire flew fast.

At this moment, Miyu looked at Illya, and Illya looked at Miyu.

Both sides fell silent.