Yusei was in a difficult position. He was currently unable to breach Tohru's father's defense.
'I need to think of a way.' Yusei frowned, thinking hard. But his main attack was the Susanoo's sword swings.
He had even applied Kuzuryusen just now, meaning each slash landed on the same point. This was actually a very high-intensity form of attack.
If even this couldn't break the opponent's defense, then Yusei truly had no other methods.
Thinking for a moment, Yusei could only ask Tohru.
"Tohru, do you have any moves that can break that shield?"
Tohru smiled wryly and shook her head, "No. I was taught and raised by Father... My abilities aren't enough to break his defense. At best, I can match him in raw strength."
Yusei nodded, 'Match him in strength? That was probably the other party going easy on Tohru.'
While one was young and the other old, for the dragon race, those old monsters, having accumulated power over countless years, should be stronger than younger dragons in both energy and physical body.
At the very least, Yusei felt Tohru's father was exceptionally powerful.
This was evident from the very beginning when the other party caught the Susanoo-cladded Dragon's full-power strike with just his claw.
"This is troublesome." Yusei felt his Ocular Power draining away faster and faster, feeling frustrated, while simultaneously feeling a rising craving for power.
'If I had a super powerful attack method, I wouldn't have to worry.'
Shinomiya main house.
Matsuko, the maid performing her daily duties, came to the Sword Repository. This was the place where the Shinomiya Family's heirloom, [Nameless], was kept.
After Yusei returned it last time, it had fallen silent again.
Today, Matsuko came as usual to clean the room.
One shouldn't underestimate this job. It involved the Shinomiya Family's heirloom, Nameless. Not just anyone of any rank could enter here.
At the very least, Matsuko had been adopted and raised by the Shinomiya Family since childhood and was extremely loyal to the family. Otherwise, how could someone not named Shinomiya have access to this sword?
However, just as Matsuko was cleaning as usual, she suddenly noticed that Nameless on the stand seemed to be trembling.
"Huh? The sword is moving?" Matsuko stared blankly at the scene.
This was a weapon, an object… it couldn't possibly move on its own unless affected by an earthquake. But everything was perfectly normal now, so she wondered how this sword could be shaking.
Before Matsuko could regain her senses, she saw the bandages wrapped around the sword shatter completely. Immediately after, the rust-covered Nameless suddenly vanished, leaving only the bandages on the ground.
Witnessing this, Matsuko was greatly alarmed. Regardless of why the sword moved on its own, she quickly ran off to report to Koken.
If Nameless disappeared, things would truly become major.
Yusei was unaware of all this happening at the Shinomiya main house.
Right now, he was wholly focused on figuring out how to break through the opponent's defense.
He considered various ideas but found none were better than his previous attacks. But giving up was not an option for him.
He had already boasted that he could protect Tohru. If he couldn't even break her father's barrier now, how could he protect her?
And just as he was struggling bitterly with this, a sound of something cutting through the air reached him.
Yusei was very sensitive to swords.
With just a turn of his head, a familiar sword appeared in his hand.
He was very familiar with this sword... It was the Shinomiya Family's heirloom, Nameless, which he had held before.
His finger had even been slightly cut by it, so it left a deep impression.
Only now, Nameless had begun to slowly undergo a transformation.
The rust on the sword body began to fade away. To say 'fade away' was perhaps not as accurate as 'dissipate'.
Because as the rust slowly scattered, what was revealed underneath wasn't a bright blade, but a blue, ethereal energy blade.
Yusei looked at all these changes in surprise.
This sword was very obedient. It hadn't been trying to attack him just now, and it seemed more like it couldn't wait to find him.
It just floated suspended in front of Yusei, or more precisely, in front of the diamond-shaped crystal of the Susanoo, undergoing its transformation. Finally, its blade slowly took its final form.
A long sword without a completely solid shape, as if formed from energy, lay before him.
The sword body was two meters long, with faint blue energy swirling around it.
On the blade itself, white lightning seemed to flicker, making it look like a product of high technology.
Yusei looked at the transformed [Nameless] and slowly reached out to touch it. The moment he made contact with Nameless, it changed again.
Nameless, which still had a sword-like form, directly transformed into energy and flowed from his hand into his body.
Yusei didn't feel the slightest discomfort. On the contrary, he felt warm all over. His entire being seemed much more refreshed.
Simultaneously, the moment he touched Nameless, he learned the true identity of this sword.
This sword was very famous. It wasn't called Nameless at all, but was a divine artifact named [Futsu no Mitama].
The three sacred treasures of Japan were very famous, but the Futsu no Mitama was also household knowledge.
This was the Sword of the God of Thunder. As the original sword of the god, Takemikazuchi, it itself represented destruction, savagery, and was also the blade of war.
Because the last vestiges of the Age of Gods faded, this sword did not disappear along with Takemikazuchi, but was passed down as a human treasure.
Except for the first successor, who was the descendant with the most concentrated bloodline of Takemikazuchi in the mortal world and could use it, subsequent successors gradually lost the ability.
Perhaps due to the dilution of the bloodline, or for other reasons, this sword gradually became covered in dust, until now, it slowly turned into... a rust-covered, poor-quality sword.
Although treasured as the Shinomiya Family's heirloom, its symbolic meaning was greater than its practical meaning.
Who the first successor was is now impossible to know. It's not impossible that it was an ancestor of the Shinomiya Family, or perhaps an even more ancient ancestor.
But now, the sudden 'awakening' of the Futsu no Mitama shocked everyone present.
The father and daughter dragons from another world present didn't know about that world's divine artifacts, and even Yusei didn't fully understand why this sword had appeared by his side.
In fact, just now, he had only learned upon contact that the true identity of Nameless was the Futsu no Mitama. He didn't know the rest.
But feeling the immense power gained from obtaining the Futsu no Mitama, Yusei felt that knowing or not knowing was already unimportant.
He was stronger now. That was enough!