In this world, there exists something that is called, Cursed tools.
To explain what Cursed Tools are and their origins in the most simple way, it's basically a byproduct when certain things were exposed in CE for a certain amount of time. It can be anything and the effect that each one carries greatly varies.
Now, given such a fact, Hiroyuki's body, after successfully performing the Core Reformation Technique, had obviously made some massive changes.
Well, just like how Curse Tools are made, his entire body, even though it only happened for just a couple of hours, was basked in a huge amount of extremely concentrated Curse Energy, and in the process, was forced to undergo an evolution.
Most especially speaking, his heart.
Since his heart is the one where he focused all his CE since the very beginning, making it the organ which was the most exposed, in the end, it stopped being a normal heart and changed into something that can only be described as, a Cursed Heart.
Or at least that's the name that Hiroyuki and Senjumaru decided on after days of careful observations. Because upon doing so, they found that, it does more than what they initially expected.
Core Reformation makes an Aura Core in one's body. And what the core does is basically Regulates and Refines Aura so the User would have a much easier time using and controlling it and when performing any kind of Technique or Arts, it would require less Aura.
But the Cursed Heart, which is supposedly just another version of that said Aura Core, does not only possess the usual Regulates and Refines function, but it also does more.
To give an example, thanks to the Cursed Heart, now, Hiroyuki's CEs are just constantly coursing throughout his entire body even if he likes it or not. Meaning, that even in its dormant state, his body will be always enforced with CE, making his overall performance always enhanced all the time.
Not only that but, since the original intention for the Cursed Heart is a core, it obviously keeps all the Curse Energies that Hiroyuki possesses and prevents a single amount of it from leaking outside of his body.
Practically making him undetectable in the process.
Cause everybody, be it a sorcerer or normal human, had an overflowing Curse Energy within them. Even the most talented Jujutsu Sorcerer cannot prevent their CE from leaking outside of their body. That is a process that no one can simply not do.
Not to mention that when using Curse Techniques or any Curse Related stuff, one has to even surge out their CE as much as possible for more efficiency. So hiding your CE inside your body is really not a thing that anyone would like to do in the first place.
Well, having an overflowing CE doesn't really mean that they would stand out all the time. Every Jujutsu sorcerer can use a technique that can make them not easy to detect despite this very fact.
Some can even make their CE vague enough that they would not be noticed even though they're already standing a few steps away from their target.
In the end, unless one possesses zero amount of CE in their body, there's no way they would not be detected by others who are sensitive enough.
However, according to the records, the inside of a human body is a domain of its own. To access it or peek through it, the shell has to be ripped out first. The very reason why the Kamo Clan, inheritor of the infamous Blood Manipulation Technique, can not just drain the blood out of their Target.
Now due to the regulation of Hiroyuki's Cursed Heart, his CE mainly operates inside his body. Unless he needs to perform certain Curse Techniques, his CE would perfectly stay still inside of him even though it's constantly circulating him.
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Jujutsu Kaisen: The Traveler
FanfictionIn a world where anomalies such as Curse Spirits, Curse Energy, and People who can wield said Curse Energy exist... another kind of anomaly suddenly spawned out of nowhere. Now this certain anomaly, compared to the other ones, is especially differen...