WARNING: The following contains spoilers for Jujutsu Kaisen Chapter 164: Tokyo No. 1 Colony, Part 4 by Gege Akutami, John Werry and Snir Aharon, available now in English from Viz Media.
Yuji Itadori is about as far from evil as anyone could be, but that doesn't mean he's never indulged in a little rule-breaking. In fact, the series' opening scenes showed him going against the wishes of his upperclassmen and even his middle school coach. While these specific stints of insubordination may not have had any ill effects in the long run, another from even further in his past has come back to bite him.
In Chapter 164, the offence in question was Yuji's unlawful entry to a Pachinko Parlor despite being a minor at the time. It's well known that gambling is strictly prohibited for children worldwide. Unfortunately for Yuji, this was exactly the leverage Hiromi Higuruma needed for his Domain Expansion's full potential to be realized against him. While Yuji was trapped in Deadly Sentencing, he was tried for this misdemeanor and forced to participate in the trial as well as accept the ruling.
The case was presided over by Hiromi's unsettling shikigami, which he called Judgeman. According to Hiromi, Judgeman is practically omniscient and knows everything about everybody within the Domain, which explains how it was able to accurately retell an event Yuji himself had almost forgotten about. The court rules were simple; Yuji had to make a case to prove his innocence against his charges. His version of events would be compared with a piece of mysterious evidence Hiromi had conjured up, and Judgeman would deliver the final sentence.
Yuji attempted to bluff his way out of the trial. He admitted to entering the parlor, but claimed it was only so he could use the bathroom. It was a solid plan and might have worked, had Hiromi's evidence been anything else. Hiromi produced a pretty damning picture of Yuji in front of a cash collection point on the date in question. He then argued that Yuji could only have been there to collect money he'd won through illegal gambling. The picture sealed his fate. When they turned to Judgeman for the final verdict, it said only two words, "Guilty. Confiscation."
Immediately, Hiromi's Domain was deactivated and as soon as the characters had both reoriented themselves, he began to pursue Yuji using his hammer as a weapon. Yuji quickly realized it wasn't a regular hammer, though. Hiromi was able to summon and vanish at will, as well as alter its size, but that wasn't the most disturbing observation he made.
Yuji noticed he couldn't control his Cursed Energy. That was perhaps what Judgeman meant by "Confiscation." However, losing the ability to use Cursed Energy isn't much of a handicap for Yuji. His strength and speed have always been his greatest asset in battle. This does, nevertheless, mean his options have become limited. He will no longer be able to use the Black Flash or possibly defend against a wave of Cursed Energy with his own. This turn of events could be attributed to karma finally having its due for Yuji's disobedience ages ago.
Hiromi, on the other hand, seems to be in peak fighting shape. He already succeeded in landing two hits on Yuji with his hammer and was surprised that they hadn't taken him out of the fight. He hasn't yet revealed more information about his Cursed Technique, but from his ability to create and control a shikigami, produce evidence from thin air and manipulate his hammer at will, it should be some kind of conjuring ability -- possibly with a legal twist.
