The day after the *Hihishirokane Sword – Amaterasu* was completed, I tested it out at Mylight, and it was easier to use than the *Azure Silver Sword – Pale Green, Type 2*.
It felt no different from the *Azure Silver Sword – Pale Green* made by Richard, and what’s more, the more magic power I flowed into it, the more its strength and hardness seemed to increase.
Thanks to that, I was able to swing the sword without any hesitation.
Perhaps that’s why, the very next day, the *Caladbolg* and *Failnaught* already gave it their seals of approval.
“Alright, shall we begin?”
“Ah.”
“Yes, please.”
As usual, we began our *Dual Heart Fusion Technique*, but this was the first time *Caladbolg* and *Failnaught* would be assisting us.
Even though it was said to be pointless as *Wingbit Liberator* and I hadn’t gotten used to each other yet, it seems we managed to adapt faster than expected.
So today, whether you call it finally or at last, we would be giving the *Dual Heart Fusion Technique* a full-fledged try.
“Caladbolg, I’m counting on you for Yamato.”
“Understood.”
“Failnaught, Mako is in your care.”
“Leave it to me.”
*Caladbolg* would assist me, and *Failnaught* would assist Mako.
I fused and generated *Wingbit Liberator*, and Mako completely generated *Spirit Hexa Dipper*, finishing our preparations.
“Alright, then, both of you, put your hands together.”
“Understood.”
“Is this good?”
“It’s fine. Failnaught, Caladbolg.”
““Understood.””
I extended my left hand, and Mako extended her right, and we overlapped them.
Then, with one heart, in this case, to succeed in the *Dual Heart Fusion Technique*, we focused our magic power into our joined hands.
“Hoh… Young Yamato, you’ve done well.”
“Huh? Oh, does that mean…?”
“Indeed. With the completion of the new sword, you too have been able to fight with your true strength. That must have been the key.”
Yesterday, during the test cut, and today in our hunt, I used *Wingbit Liberator* and *Amaterasu*, and I’ve been using close-quarters combat frequently again, so perhaps that was it.
“Does that mean it’s possible to succeed?”
“It is possible.”
Alright!
We haven’t succeeded yet, but I’m happy to have gotten the nod from *Caladbolg*.
“Then *Caladbolg*, *Failnaught*, I’m relying on you.”
““Understood.””
At Father’s signal, magic power from *Caladbolg* and *Failnaught* flowed into my *Wingbit Liberator* and Mako’s *Spirit Hexa Dipper*.
Simultaneously, I felt Mako’s and my magic power intermingling, transmitted through her joined hand.
Is this what the *Dual Heart Fusion Technique* feels like?
“It feels… strange.”
“That’s natural at first. But if you can feel that way…”
“Indeed. Both of you, look at your respective *Magical Tools*.”
Prompted by Father, I turned around and saw that *Wingbit Liberator* and *Spirit Hexa Dipper* were enveloped in light.
No, more than that, their shapes were changing within the light?
” *Wingbit Liberator* and *Spirit Hexa Dipper* are becoming one…”
“More than that, they’re getting smaller…”
Just as Mako said, the unified *Wingbit Liberator* and *Spirit Hexa Dipper* gradually changed shape.
A ring of light and a pedestal-like shape supporting it, how to describe it?
When the light finally subsided, a giant shuriken adorned with wings and mounted on a pedestal appeared.
“It seems we’ve succeeded.”
“Indeed.”
““Thank you, Caladbolg, Failnaught.””
The fact that they spoke confirms that the *Dual Heart Fusion Technique* was successfully completed.
I had tried my best to succeed, but to think that we actually managed it, it’s quite profound.
“Allow me to introduce myself. I am the Sacred Sword *Blau Solaris*.”
“I am the Sacred Wing *Agatholamp*. Are you our masters?”
Are they looking at us…?
I can sense a kind of atmosphere, but since they don’t have expressions, it’s hard to tell.
Wait, *Blau Solaris* and *Agatholamp*?
“*Blau Solaris* and *Agatholamp*? If I recall correctly, both were used by the Celtic god Nuada.”
“Is that so?”
“Ah. However, *Blau Solaris* was supposed to be a longsword, and *Agatholamp* was a prosthetic arm.”
Father is explaining this to Mother, but I know this as well.
I believe Nuada became or regained the throne of the Tuatha Dé Danann by using a prosthetic arm made of silver.
That prosthetic arm was *Agatholamp*, and the sword Nuada used was *Blau Solaris*… I think.
Also, wasn’t Lugh, the wielder of the divine spear *Brú na Bóinne* that Father and the others generate, also related to them?
“There are differing theories regarding the sword, but that’s mostly correct.”
I was relieved to hear Father say that.
But I never expected to generate an *Engraving Divine Artifact* that has a connection to *Brú na Bóinne*.
Is this, perhaps, because we’re parent and child?
“Caladbolg, what do you think?”
“While I cannot deny that possibility, it is likely a coincidence.”
“Indeed. To manifest together, we require two generators.”
“Therefore, we are two, yet one.”
The story goes that Nuada, having lost his right arm, used *Agatholamp* as a prosthetic and wielded *Blau Solaris* with that hand, so in that sense, they can indeed be called two in one.
“They’re like *Excalibur* and *Chalice*.”
“Ho, not only *Caladbolg* and *Failnaught*, but *Excalibur* and *Chalice* have also manifested?”
“Indeed they have, but there is something we need to discuss about that. Yamato.”
I apologize for being a party pooper, but we would never meet.
The fundamental issue is that this is not Earth.
I need to explain all of that from the beginning.
At Father’s prompting, I proceeded to explain the details to *Blau Solaris* and *Agatholamp*.
That this is not Earth, but a different world called *Helios Orb*.
That my and Mako’s intention is not to return to Earth, but to be buried here in *Helios Orb*.
That there exist nemeses called the *Demon Race*, who should not be present in *Helios Orb*.
And that there is a king who commands them, a *Divine Emperor*, who is a great demon lord.
“I see. While it is a somewhat unexpected turn of events, we understand the masters’ circumstances. Still, to think that a temporal discrepancy occurred during the transfer, allowing for our manifestation… quite interesting.”
“You’re not too bothered by our decision not to return?”
“Regardless of the world, the essence of us *Engraving Divine Artifacts* is to be weapons. Therefore, as long as we can wield our power, it matters not where. Rather, in our original world, would we have had any opportunity to utilize our strength?”
“Unfortunately, no. I imagine *Caladbolg* and *Failnaught* are envious of *Blau Solaris* and *Agatholamp* in that regard.”
“Indeed.”
“In the current world, there is no opportunity to wield us. What is required of us is the role of a deterrent.”
I see.
Indeed, on Earth, there is almost no chance to wield *Engraving Divine Artifacts*.
Father and Mother say they had opportunities in the past, but that was before I was born, even before my Older Brother. Since then, even though they have manifested from time to time, they have never truly used them.
However, *Helios Orb* is a world where the threat of monsters is commonplace, so there would be more frequent opportunities to manifest them than on Earth.
If we use the Mythical-class weapons shown to us by Father and Mother, even *Demise Species* can be easily defeated, so I suspect Mako and I will be generating *Blau Solaris* and *Agatholamp* quite often.
“So, it’s not a problem if we don’t go back?”
“Rather, it’s what we desire.”
Encouraging words.
“*Blau Solaris*, the other half who generated you is our son. We will return soon and never meet again. Therefore, I wish to entrust them to you.”
“What… The son of the generators of *Caladbolg* and *Failnaught* generated me? Such a tale, even in the long ages of man, is only comparable to the Three Divine Swords of the Age of Gods or the Four Swords of the Royal Advisers.”
The Three Divine Swords of the Age of Gods and the Four Swords of the Royal Advisers?
This is the first I’ve heard of them, but what are they?
No, I can guess the Three Divine Swords of the Age of Gods.
“The Three Divine Swords of the Age of Gods and the Four Swords of the Royal Advisers are top-secret matters that cannot be revealed. Please do not speak of them lightly.”
“Understood, but as this is a different world and the masters have no intention of returning, is there any point in keeping them secret?”
“Well, that is true, but…”
As *Blau Solaris* and *Agatholamp* explained, the Three Divine Swords of the Age of Gods are *Engraving Divine Artifacts* that the Imperial Family of Japan has generated through generations, and the Four Swords of the Royal Advisers are those generated by the royal family of England on the island of *Brittania*.
It seems that one cannot know which sword will be generated until it is actually created, but it is certain that it will be one of the swords other than the one generated by the previous generation.
Both can be generated simultaneously upon enthronement, but only the Seven Master Emperors can witness their form, and even the heads of state have almost no opportunity to see them, despite knowing of their existence.
Neither is related to the governance of the country, but they are both symbols and the reason they have continued to this day. Therefore, not only Japan, but also the United States, which merged with the United Kingdom, now the USKIA, will never abolish them.
Incidentally, the Three Divine Swords of the Age of Gods are *Reitou Futsumimitama*, *Shinto Ame-no-Murakumo*, and *Youtou Ama-no-Habakiri*.
The Four Swords of the Royal Advisers refer to the Divine Sword *Marmalodios*, the Sacred Sword *Carnwennan*, the Demonic Sword *Clarent*, and the Royal Sword *Caliburnus*.
These are all swords I’ve heard of in myths and legends, but I never imagined the Imperial Family of Japan and the Royal Family of England generated them generation after generation.
“I’ve certainly never heard of them before. Oh, then the nuclear weapon that almost fell on Japan during World War III…?”
“It was *Ama-no-Habakiri*. Although it was not publicly announced.”
No way.
It’s true there were rumors that the nuclear weapon dropped on Japan was destroyed by an *Engraving Divine Artifact*, but I never thought the Emperor himself had dropped it.
“Normally, it would be like that. More importantly, you two need to properly grasp your characteristics tomorrow and go into actual combat soon.”
“We understand. Our schedules are quite full for a while, but once the entrance ceremony is over, we’ll have more free time, and we plan to test ourselves around Mylight then.”
If it were up to me, I’d want to test them right away, but *Blau Solaris* and *Agatholamp* were just generated, so I don’t even know what characteristics they possess.
Also, starting tomorrow, *Memoria General Academy* begins accepting students into the dorms, and the entrance ceremony is in three days, so it’s difficult to find time for even a small hunt right now.
I also have to give a congratulatory address at the entrance ceremony.
“Mylight is good, but Kobaldia is also an option. Actually, wouldn’t that be better for testing Mythical-class weapons?”
“Ah, indeed.”
I had been thinking of using *Engraving Divine Artifacts* against monsters, especially *Demise Species*, but as Mako said, the capital of *Retisencia*, *Kobaldia*, is also a viable option.
After all, a divine oracle has been issued to destroy it quickly, and the *Treasure Tree* is in danger due to the *Demon Race’s* magic power, so *Retisencia* must be destroyed quickly.
“Ah, it’s that country that’s become mostly inhabited by the *Demon Race*, right?”
“So it seems. After all, no *Trader* has gone to *Kobaldia* in the past year. Unless most of the residents have become *Demon Race*, they wouldn’t be able to survive.”
The *Demon Race* can absorb magic from the air and thus do not need to eat.
Therefore, they would not starve even without access to food via *traders*.
However, because of this, the *Treasure Tree* located near *Kobaldia* is said to have withered away if Father and Mother hadn’t intervened.
It’s also said that with the *Divine Emperor* landing on the *Philia Continent* in the recent battle, monsters have become more prone to evolution, so this is a problem that needs to be dealt with swiftly.
Therefore, once I have some leeway, I think it would be best to use the Mythical-class *Blau Solaris* and *Agatholamp* to annihilate *Kobaldia*.
“We’ll probably have to consult with His Majesty about what to do. We don’t know what he’ll do, so it’ll likely be next month at the soonest.”
Mako sighs, and I agree.
Ah, ‘he’ refers to the idiotic prince of the *Count Enlo Istlias*.
I expect him to do something foolish shortly after we enroll, but I have no idea what it will be, and depending on the situation, I might be called upon to deal with it. This means that even after the entrance ceremony, the situation may remain unstable.
Therefore, even if we were to take down *Kobaldia*, it might be pushed back to a later date.
However, I understand that leaving it as is is also problematic, so I need to consult with His Majesty and the others to make sure I secure the necessary time.
