A Shaman from the Uzumaki Clan in the World of Naruto

"I don't know about other Sealing Techniques, but for the Basic Guide to Explosive Paper, that's just nonsense!"

Keito fell silent for a moment, Reiji's eyes widened.

Reiji rarely spoke so honestly, and the sharpness in his voice left Keito a bit stunned.

Keito's face looked dazed, as if he couldn't process the words he had just heard.

"...!" Keito could only stare at Reiji in confusion, bewildered by the intensity of the feelings being expressed by the young man.

"Only a madman or a very genius person could understand Fuinjutsu and follow such a complicated pattern to create Explosive Paper Seals!"

"That's nonsense! The person who wrote that book must not know what they are doing!"

"I wonder if that person really understands Fuinjutsu or is just writing without knowing anything!" Reiji became more animated, his expression reflecting a deep hatred for what he considered stupidity.

Keito remained silent, unsure of what to say.

Reiji, who was usually quiet and calculating, was now speaking with such strong emotion, leaving Keito surprised.

"Moreover, nothing is clearly explained about how the Explosive Paper itself works!" Reiji continued quickly.

"Especially the three fundamental things that are very important: [Letters and Numbers], [Formulas], and [Keywords]. Those are the basics of Explosive Paper! I don't know how other Fuinjutsu works, but I am very sure that those three things are the core of everything!"

Keito was truly shocked.

This was the first time Keito had heard something so profound about Fuinjutsu, and he felt as if he had been jolted from the world he had understood until now.

"...!" Keito could only remain silent, digesting Reiji's words. Until now, Keito had not known about these three fundamentals, and it left him both impressed and confused.

"Is this really how Fuinjutsu works?" Keito thought to himself.

Reiji continued without waiting for Keito's reaction. "Here's the explanation: [Letters and Numbers] are the Explosion. [Formulas] are what makes it explode."

"As for [Keywords], that is Fire. So, if the [Keyword] is changed to Water, the explosion will turn into water!"

"If the [Formula] is a Chain Explosion, then the explosion will repeat within one Seal. All of that can be adjusted as needed!" Reiji explained passionately, as if he had just discovered a great secret.

Keito felt as if a new world had opened up before him. This was knowledge he had never encountered anywhere before.

All the Fuinjutsu books Keito had studied previously had never touched on such fundamentals.

Keito felt astonished and deeply impressed by Reiji's understanding, which was profound about something that had always been considered complicated and hard to grasp.

"I don't know how people can study Fuinjutsu without knowing these three basic things..." Reiji shook his head, disappointed.

"But clearly, the person who made that Explosive Paper book is truly foolish. They understand nothing about Fuinjutsu!"

"How could someone like that write a book full of nonsense and rubbish?" Reiji vented his frustration again, this time with full conviction.

Keito, who had initially been shocked, now began to feel admiration.

Keito had never expected that Reiji would reveal such a deep understanding of Fuinjutsu.

Keito felt confident that the decision to rely on Reiji was the right choice.

In an instant, Keito's view of this young man changed—Reiji was not just an expert,

Reiji was a genius in this field.

"So… do you know who wrote the *Basic Guide to Making Explosive Paper*?" Keito asked, a faint, enigmatic smile playing on his lips.

Reiji snorted lightly, then shrugged with an indifferent expression. "I don't know. And to be honest, I don't care."

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