The Scroll of Seals was a scroll passed down and guarded by successive Hokage, containing numerous Forbidden Jutsu.
The reason they had been sealed away was that these Forbidden Jutsu were either exceedingly difficult to master or came with severe side effects. One misstep could bring disastrous consequences.
Yet despite their immense difficulty and severe side effects, anyone who mastered them could wield tremendous power.
The Fourth Hokage had made his name throughout the ninja world and earned the title Yellow Flash because he had mastered the Space-Time Ninjutsu, the Flying Thunder God Technique, which was recorded in the Scroll of Seals.
Orochimaru had been able to transfer his consciousness into other bodies and thereby attain eternal life because he had mastered Impure World Reincarnation, another technique from the Scroll of Seals.
Once mastered, these techniques granted immense power. Thus, despite their severe side effects, many people desperately coveted the Scroll of Seals.
"Flying Thunder God Technique and Eight Gates!"
Uchiha Fugaku was naturally quite interested in the Forbidden Jutsu within the Scroll of Seals. The ones that interested him most were the Flying Thunder God Technique and the Eight Gates.
As an exceedingly rare Space-Time Ninjutsu, the Flying Thunder God Technique had earned the Fourth Hokage his Yellow Flash title. Its power went without saying.
As for the Forbidden Jutsu known as the Eight Gates, its greatest practitioner, Might Guy, had been able to wound Six Paths Madara after opening the Eighth Gate: Gate of Death. Its power was naturally formidable.
"I wonder whether I have Space Talent!"
Of these two Forbidden Jutsu, the Flying Thunder God Technique was the more difficult to cultivate.
It was a ninjutsu that required exceptional Space Talent. Without it, one could train for an entire lifetime and still struggle to achieve anything.
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