Dinner time passed quickly.
Because Naoki, Gray, and Caren were the type of people who ate quickly, not long after dark, the three of them had already finished dinner.
"Has Sister Caren left already?"
After washing the dishes and returning to the living room, Gray only saw Naoki sitting on the sofa watching television.
"Didn't Big Brother see her off?"
"See her off for what? She was just freeloading a meal in the first place, and she's actually our monitor. It's already unreasonable enough that I didn't kick her out and even fed her."
"But if I remember correctly, Big Brother was the one who invited her..."
Sometimes, Gray felt very conflicted by her brother's behavior. He clearly said he didn't like other people, but in his actions, he was very caring towards them. Touko had also told her before that during a fight, to prevent Touko from getting hurt, Naoki directly kicked her away, sending her flying.
Although it did prevent her from being attacked, judging by the result, could that really be called not getting hurt?
But in any case, Gray felt that her brother being like that wasn't bad either.
"By the way, Big Brother, when I was doing my homework earlier, a letter flew in through the window."
"A letter?"
"Um, because I intended to show it to Big Brother anyway, I already brought it downstairs." Saying this, Gray took out an opened letter from her pocket, "From sister Rin."
Sent by Rin?
Receiving the letter, Naoki curiously opened it.
The content of the letter wasn't anything special, just that Rin was facing some problems and needed Ruby's function that could provide unlimited Mana for use. She, Luvia, and Miyu would wait for Gray and Naoki in the large underground cave on Mount Enzou.
"Needs Ruby's unlimited Mana, this is no problem... wait, what does it mean here, they went to the large underground cave?"
Seeing this line of text, Naoki's expression instantly froze, and so did Gray's.
"Big Brother, if I remember correctly, there were a lot of traps we set up there before..."
Hundreds of Magecraft traps used to deal with the Ainsworth Family! Because they had absolutely no intention of letting the opponents live, Naoki designed those traps with the intent to kill. If someone entered carelessly, even a hundred lives wouldn't be enough!
If Rin and the others went in without knowing anything...
Not to mention the traps aimed at Displacement Magecraft, just the Rune traps alone would be enough to kill them all there!
This letter was sent while Gray was doing her homework, and almost two hours had passed by now.
"Can Avalon save the dead?"
This was the only question in Naoki's mind at this moment.
◆━⊰✧⊱━◆
Half an hour later.
In front of the entrance to the large underground cave on Mount Enzou.
"Ara, you guys came so quickly—why are you covered in injuries like this?"
Seeing Naoki and Gray sitting in front of the cave entrance with their bodies full of wounds, Rin and the others unconsciously frowned, and Miyu, who had already transformed into a Magical Girl, even warily raised her magic staff.
"Very strong Mana reaction, could there be an enemy inside the large cave?"
"No, there's no enemy, how should I put it..."
[This is almost the same as the situation of throwing a stone to hit your own foot]
Ruby held back laughter and said in a deep voice.
Because they were worried that Rin and the others might have already stepped on their traps and gotten injured, Naoki and Gray hurriedly flew there directly, but only after arriving did they realize that Rin and the others hadn't come yet at all.
And considering the danger of the traps, in order to enter smoothly later, Naoki thought about disassembling some of the traps on the path they would definitely take first, and then reinstalling them later.
But the problem came.
It was true that he set up those traps, but he couldn't dismantle them, because most of the traps were chain traps. Dismantling them would take a considerable amount of time, and he also didn't know when Rin and the others would arrive. If they arrived while his traps weren't finished being dismantled...
So Naoki made a bold decision.
—Directly step on them one by one!
The pit he dug himself, he had to jump into himself!
Defusing mines with his body!
Really, even though he had Magic Resistance rank A, and even used Protective Magecraft, swallowing almost a hundred Magecraft traps at once was really a bit unbearable—the wounds on Naoki's body now were the proof.
This was the first time his defense had been breached in a non-Servant magical battle! Even Naoki himself was amazed that he could do this.
As for Gray's injuries... because he thought about increasing the success rate, the range of influence of the traps Naoki set up was quite large, so when he stepped on them one by one, Gray was slightly affected.
"My and Gray's affairs don't need to be worried about. Instead of that, what do you need from Ruby? Is there a place that requires a lot of Mana?"
"Actually, the ley lines seem to be blocked, or maybe the scale of the ley lines has shrunk. We need to inject a lot of Mana to break the blockage or expand the ley lines. Usually, it requires dozens of magicians to hold a large ritual, but since there are Ruby and Sapphire who can provide unlimited Mana, it's not that complicated."
Rin explained.
"This is a direct task from the Grand Master, we really can't not do it, especially since I'm also the head of the Tohsaka family."
While speaking, the group had already arrived inside the large cave.
However, looking at the messy large cave, Rin, Luvia, and even Miyu, all three simultaneously looked towards Naoki and Gray.
"What exactly did you guys do before we came?"
"Nothing, maybe there was an explosion here before? A gas explosion or something, doesn't Fuyuki City have a lot of underground natural gas reserves? It's very easy for explosions to occur in a space like this."
Naoki smoothly made up a reason that Rin had often heard, then directly headed towards the large platform.
"Then, how do we do it?"
"Stick this earth needle into the center, then let Miyu and Gray keep injecting Mana. I'll pay attention to how much needs to be injected." Saying this, Rin took out a half-staff-like object that looked like a branch from her backpack and forcefully stabbed it into the center of the large platform.
A few seconds later, the branch that was initially only the size of a person suddenly twisted and grew like opening branches and leaves, instantly growing into a large tree. And with the earth needle as the center, a magic circle also appeared on the ground surface.
[Then it's my and Blue's turn to perform!]
"We just need to inject Mana?"
Transforming into Magical Girls, Gray and Miyu each stood on either side of the earth needle, pointing their magic staffs at the earth needle, and slowly releasing Mana. Two Mana lights, red and blue, instantly illuminated the large and dark underground cave.