"Okay, but it's no fun practicing alone, Assassin. How about I practice with you?"

"Okay, okay! Master, let's get stronger together! The next Saber is definitely waiting for us!"

Otosaka Souji found two bamboo swords at Ryudouji Temple.

He used one for himself and gave the other to the mysterious female protagonist, X.

Why use bamboo knives instead of real swords and guns?

It's because they're afraid of getting injured, which would affect their performance in the Holy Grail War later on.

Whether it's himself getting hurt or the mysterious heroine X getting hurt, Otosaka Souji is determined not to allow it.

After all, the masterminds Gilgamesh and Kirei Kotomine are no ordinary people, and one wrong move could mean defeat for them.

Although victory wasn't a necessity for Otosaka Souji, she still didn't want to lose so easily.

Otosaka Souji felt honored and excited to be able to fight against Gilgamesh, the oldest hero-king.

Therefore, Otosaka Souji still hopes to defeat Gilgamesh, the oldest hero king and the template for all heroes, in this epic, mythical Holy Grail War.

The mysterious heroine X gripped her bamboo sword tightly and shouted at Otosaka Souji.

"Come on, Master, let me see your swordsmanship."

"Then I'm going to go now, Assassin, you better watch out."

With that, Otosaka Souji unleashed a forward slash, carrying a gentle breeze as he slashed towards the mysterious heroine X.

Having spent two and a half years in the world of One Piece, Otosaka Souji naturally learned some basic swordsmanship.

Although it's only a superficial understanding, it's enhanced by Observation Haki, Mind's Eye, and Magical Essence.

Otosaka Souji's swordsmanship is already no weaker than that of an average swordsman of the Iron-Cutting Rank, and may even be stronger.

This is perhaps the charm of coordinating multiple global forces.

Despite his still weak swordsmanship, under the coordination and support of multiple world powers, he grew to a level that ordinary people could not reach.

The same applies to close combat, archery, badminton, basketball, and other sports.

The mysterious heroine X, who is comparable to Saber, is no pushover either.

With a swing of his bamboo sword, he blocked Otosaka Souji's attack.

Then, tilting the bamboo sword 35 degrees to the right and exerting force to the left, Otosaka Souji's attack was easily neutralized by the mysterious heroine X.

"Master, your swordsmanship is quite good; your attacks are very fierce."

"Hahahaha! This is nothing compared to you. You easily thwarted my full-force attack."

"Of course! I'm the strongest Saber, how could I be defeated so easily?"

The mysterious heroine X is quite proud of her swordsmanship.

The sparring was intense, with Otosaka Souji constantly attacking from different angles, while the mysterious heroine X defended flawlessly.

Otosaka Souji made many mistakes during his attack, but the mysterious heroine X failed to capitalize on these weaknesses to launch a counterattack.

Instead, it was through guidance that Otosaka Souji's weaknesses gradually diminished.

It's like an elder teaching a younger person, helping them improve their swordsmanship faster and faster by giving them practice moves.

That's right, Otosaka Souji is growing very fast now, and her comprehension is also very high.

During his sparring session with the mysterious heroine X, Otosaka Souji also discovered X's intentions.

Otosaka Souji became even more focused, throwing herself wholeheartedly into the battle.

Through the tutorials on the moves by the mysterious heroine X, Otosaka Souji's swordsmanship became increasingly refined and effective.

The slashing technique is no longer flashy and elegant, but simple, concise, and effective.

As he continued to improve, some of Otosaka Souji's incorrect sword-wielding techniques were corrected by the mysterious heroine X.

Although Otosaka Souji has grown and progressed rapidly, there is always a critical point.

After realizing that Otosaka Souji had reached a plateau and was no longer making progress, the mysterious heroine X also stopped trying to train him.

"Master, be careful from now on, I'm getting serious."

"Right now."

The mysterious heroine X, through intuition, seized the moment when Otosaka Souji was taking a breath.

He intended to strike Otosaka Souji's wrist, the one holding the sword.

However, thanks to the warnings from his Observation Haki and Mind's Eye, Otosaka Souji managed to dodge the attack, but his bamboo sword was still knocked away by the mysterious heroine X.

Otosaka Souji's dodge left the mysterious heroine X quite amazed.

"Oh—, Master, I didn't expect you to be able to dodge my sword."

"As expected, Assassin's swordsmanship is much better; he defeated me so easily."

"Hehehe, no, Master, you're amazing too. I'm sure you'll become even more powerful with the system's kendo training."

Otosaka Souji's sincere praise made the mysterious heroine X a little shy, but mostly happy.

The tuft of hair on its head couldn't help but swing happily.

At this moment, the mysterious female protagonist X paused for a moment and spoke in a slightly serious tone.

"However, Master, if you want to truly break through the bottleneck and make rapid progress in swordsmanship, training alone is not enough; you also need real combat experience."

"The sword is a killing technique. A sword that has never been used in actual combat and has never drawn blood can never unleash the full power of the way of the sword."

Otosaka Souji was naturally aware of the warning from the mysterious heroine X.

"I understand what you're saying. If I have the chance, I'll try to use the sword more often in actual combat."

"Phew, it's good that you know, Master. You've reached your limit too. Let's call it a day for today's training."

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