The following contains spoilers for Jujutsu Kaisen Chapter 225, "Inhuman Makyo Shinjuku Showdown, Part 3" available in English from MangaMonster.
The epic struggle between Gojo Satoru and Sukuna Ryomen resumed in the most recent episode of the Jujutsu Kaisen manga, with chapter 225 ending on a cliffhanger. Fans are concerned about the fate of their favourite jujutsu professor after Sukuna delivered a devastating blow to the sorcerer. The familiarity of Gojo's wounded, though, may hint at an unforeseen transformation for the greatest sorcerer alive.
Toji Fushiguro, the assassin, also hurt Gojo as a youth. The sorcerer not only survived what should have been a death strike, but he also ascended as a sorcerer, becoming the Gojo who continues to astound the jujutsu world today. With the present so neatly aligned with the past, the narrative could be setting the stage for him to level up, gaining totally new levels of strength.
This Isn’t Gojo’s First Fatal Wound
Gojo and Sukuna squared off in Chapter 225, "Inhuman Makyo Shinjuku Showdown, Part 3," in a duel of Domain Expansions. The pair were evenly matched, but the barrier of Gojo's domain was attacked from the outside due to the uncontrolled nature of Sukuna's Malevolent Shrine. This is the one weakness of any domain, and as a result of Unlimited Void failing, Sukuna was able to sever the sorcerer's neck cleanly.
This isn't the first time Gojo has been dealt a death blow of this magnitude. Toji Fushiguro fought the sorcerer on the school grounds when he was a second-year student at Jujutsu High. Toji stabbed Gojo in the throat with a special grade cursed tool, the Inverted Spear of Heaven, to end the combat. This blade disables cursed techniques, including Gojo's Limitless, which is why the attack was successful.
This injury would have killed any victim under normal circumstances, but Gojo is no ordinary sorcerer. Despite all chances, he survived and immediately pursued Toji, capturing the assassin before his injuries had healed. In a fit of wrath, he exchanged blows with Fushiguro once more, effectively ending the assassin's life.
Gojo Is About to Undergo a Massive Power-up
Gojo was able to withstand a lethal hit to the neck the previous time he received one by climbing as a sorcerer. The occurrence compelled him to perfect his Reverse Cursed Technique: on his deathbed, he concentrated all of his energy on the ability and uncovered the core of cursed energy. As a result of the reversed flow of energy, he healed himself and saved his own life. By mastering the Reverse Cursed Technique, Gojo was able to channel the reversed flow of energy into his innate Limitless technique, releasing the power of his Red and Hollow Purple offensive assaults. Because Toji stabbed him in the neck and brought him to the edge of death, all of Gojo's strength filled him, and history may be ready to repeat itself.
The almost identical injury inflicted by Sukuna in Chapter 225 may not be the end of Gojo in the slightest. In contrast, it may be foreshadowing yet another enhancement to his powers. Sukuna has shown that Domain Expansions don't need to be as limited as they are, and the sure-hit technique can actually be even more formidable. On top of this, the circumstances of both scenarios are near enough the same. In both instances, Gojo was injured via a lethal blow to his throat, and no normal sorcerer would survive these attacks -- but he hasn't coined the name of the strongest sorcerer alive for no reason, so will undoubtedly survive.
If Gojo can master an empty barrier version of Unlimited Void, he would become unbeatable and ascend a second time. Unlimited Void in its original form is already overpowered, flooding the opponent's mind with an infinite amount of raw information until they're physically incapable of movement. Transcending this to a domain with no weaknesses that can't be overpowered would lead to another ascension for the sorcerer, making him even more terrifying.
Gojo has been sliced through the throat by Sukuna, leaving fans to assume he is doomed. However, he has survived a nearly identical injury before, and definitely will again. This incident is not the doomsday it appears to be, and is more likely foreshadowing an incoming influx of power from Gojo. Sukuna bragged about his unclosed barrier, but this same unique ability could be what finishes the ancient sorcerer.