——2004.7.25——

When Ryunosuke returns to "Camelot" with two students and a suspected time-traveler, the sun's glow has gradually been obscured by the high-rise buildings of Fuyuki City, and can only cast dappled light and shadow on the taller buildings and the empty ground of the church.

"Mr. Yusheng, do you need my help? I don't think it's convenient for you to open the door......" Matthew looked at Ryunosuke with an expression on the crumbling wall.

"Hah! It's still a long time coming! Ryunosuke, who was carrying a large bag and a small bag, staggered close to the courtyard gate, and then slammed directly into the gate with his shoulder.

In the next instant, an electronically synthesized woman's voice sounded from the door:

"What's the best music in the world?" 】”

"Huh? Is this a voice-activated door? Matthew was surprised.

"It's silence!" "It's a doodoo~"

Yan Feng Shirou and Illya did not answer her question, but directly reported the answer to the gate.

But the gate was completely unresponsive to both answers.

"Hmph, hahaha, you guys are so naïve, do you think you can guess the correct answer?" Ryunosuke lifted the big bag in his hand again, and said to the door: "It's 'Nero's song'!" ”

Welcome back to Camelot, King Arthur. The metal gate slid open in both directions.

“……！” Matthew's eyes widened.

"Who has ever heard Nero sing!" "Since Mr. Arthur has said so, it must be extremely beautiful."

"Hahaha!" Ryunosuke didn't answer, and walked in the door with a large bag and a small bag.

Although I haven't actually listened to it, among the fragments of memory, Nero's concerts have always been full, and many people were moved to tears and even fainted during the singing, which must be extremely beautiful.

"Ryunosuke is cheating!" Illya looked dissatisfied with the answer, grumbling as she followed the door.

"So, this is controlled by artificial intelligence?" Matthew did not enter the gate, but touched its surface,

Ah, it's not people like Hayashi and Hasegawa who are used to Camelot technology.

Ryunosuke handed over to Shirou and asked him to put the things he bought into the living room laboratory, and said to Matthew in the courtyard, "Of course not, it's just an ordinary voiceprint lock, and there are three ways to unlock it, one is to answer the corresponding question correctly, and the other is to say the predetermined 'voiceprint key', and the latter can ignore the question." ”

"It's like a computer's user password and an administrator's password." Shirou Yanfeng, who had returned from the living room, interjected.

"You can decide the voiceprint key, as well as the questions and answers, but if you can guess the questions designed by the king and enter the courtyard, the king will recognize him/her as a friend of Camelot." Ryunosuke crossed his arms and said proudly.

Matthew didn't know what to think of, and was stunned outside the door for a moment.

Squeak squeak...... It seemed that the time was up, and the gate gradually closed on its own, locking Matthew out of the city of "Camelot".

"What kind of man is the most attractive? After the door closed, he seemed to sense that Matthew was still outside, so he directly asked a new question.

"Man, man?" Matthew was stunned again.

"That's Illya's problem! Not mine! Ryunosuke hurriedly retorted outside the courtyard.

"Matthew, you can say the same as me?"

"One, a man dressed in black is the most attractive!" It seemed that because she was locked outside and couldn't see the expressions of several people, Matthew's tone was a little bolder and she said her answer directly.

"[Welcome to Camelot, Princess Eliya]" dutifully slid the door open to both sides.

"Hmm...... Uh-huh? Surprised that the answer turned out to be the same, Illya began to circle around Matthew: "I warn you, don't beat my father's idea, my aunt is a little too late. ”

"I'm not talking about Mr. Wei—Mr. Kelly." Matthew glared and tried to justify: "I'm talking about a ...... wearing black armor, with black flames all over his body, and a red glow like charcoal in his eyes."

"Hey~" Illya patted Matthew's shoulder with her feet, and then looked at Ryunosuke: "It seems that she and you are in the same country." ”

"It's strange, I'm a secondary school and I'm not an airwave."

"Oh?"

"It's not the second second!"

"Dudulu~Huh? Got guests? ”

――――

When he learns that Illya and a "lost foreign girl" are going to stay in "Camelot", Hayashi Hao is very enthusiastic about cleaning up their room and strictly forbids Ryunosuke to step into their "girl's territory".

"Really, like I usually go into her yard." Ryunosuke, who has nothing to do, stays in the living room with Shirou Honmine, chatting over a snack that is obviously used to pass the time.

"Teacher Arthur naturally wouldn't do anything that displeased the lady." Shirou replied very seriously.

"Uh-huh......" Ryunosuke dealt with it casually with some surprise, feeling that everything he said Shirou would be taken seriously, if he was a girl, he was afraid that he would be easily deceived by others, no, even if it was a boy's character, it was dangerous.

"Speaking of which, Camelot's experiment of 'sending a message to the past' has been successful," Ryunosuke digressed the subject, "Bedwell, is there anything you want to change?" When Lancelot returns, a new round of experiments can be conducted. ”

"Well, this ......"

"A-T-" Shirou was about to say something, when he heard a hoarse shout from outside the courtyard, followed by a strange sound of electric discharge, and finally Camelot's door slowly opened.

"Hah, Lancelot's voice again—" "Enemy attack!?" ”

Ryunosuke was about to laugh a few words, but saw Matthew rush out of the girl's yard carrying a round table.

At this moment, from outside the open door of the cave, a terrifying humanoid with black and red thunder and lightning wrapped all over his body walked in, which seemed to be a little slurred by electricity, and made a voice similar to that of some terrifying monster:

"[Damn Arthur—your device is getting more and more powerful—I must —"

"Fall in—this trick!"

Hasegawa's reaction was half a beat slower, no, or rather, there was no chance of successful dodging from the start.

Ryunosuke watched in amazement as Mathew rushed towards Hasegawa at high speed, and then slammed him to the ground.

"Hmm...... He shouldn't be fine, right? After all, he is a physical education teacher, and he has a strong physique," Olga Marie followed and walked in from outside the door, looking at Hasegawa, who fell to the ground and convulsed: "If something goes wrong, tonight's research will have to find a way to stop this." ”

"So, [Director]?" Compared to the others who cared about Hasegawa, Matthew, as the "murderer", paid more attention to Olga Marie and said a title that impressed Ryunosuke.

Well, she is indeed the key to finding the "Holy Grail", or "the truth of the world".