Among the many techniques in a Jujutsu Sorcerer’s arsenal in Jujutsu Kaisen, Black Flash can be rendered an explosively powerful move. Based on the eponymous manga series by Gege Akutami, Jujutsu Kaisen revolves around high-school student Yuji Itadori, who happens to save a friend from a Curse by ingesting the fingers of Ryomen Sukuna, the King of Curses. Now sharing a body with one of the deadliest cursed spirits, Yuji joins the Tokyo Jujutsu High School of Sorcery, an organization that is bound to alter his life forever.
Season 1 of Jujutsu Kaisen reached dramatic climax when the students of Tokyo and Kyoto Jujutsu Tech schools are forced to team up together in order to fight off Hanami, another cursed spirit. Episode 19 opens with the continuation of fight sequences against Hanami, who proves to be especially difficult to defeat. However, Yuji and Todo arrive, and it is then that Yuji is able to master the ultimate curse technique – Black Flash.
This special jujutsu attack holds the ability to amplify the user’s physical hit, provided that the sorcerer is able to apply their cursed energy within one-millionth of a second. Describing it as a “distortion in space,” Todo reveals that Black Flash heightens the force of a strike, and is arguably more impactful than Yuji’s delay-based Divergent Fist. Naturally, Yuji is not the first to employ the Black Flash, although it is hinted that the technique is one that evolves naturally. Here is every Jujutsu Kaisen character who can use Black Flash.
Even before he becomes a part of the Tokyo School of Sorcery, Yuji displays incredible physical prowess and a natural talent for athleticism. After Yuji swallows the cursed finger to protect Megumi and is possessed by Sukuna, he is still able to retain control over his body to an incredible extent. As Yuji navigates the world of cursed spirits and the ways in which they can be combatted, he forms a close friendship with Aoi Todo during the Kyoto Goodwill Event arc. It is then that Todo teaches Yuji how to unleash his abilities, with the effective harnessing of cursed energy, combined with his superhuman strength. This leads to Yuji wielding Black Flash, which seems to inflict great damage upon Hanami after a single strike. Then on, with multiple Black Flash attacks and the aid of Todo, Yuji is able to overwhelm the special grade curse. This is markedly impressive if one were to consider the fact that Black Flash requires incredible concentration, and cannot be manifested solely by will, but rather, is an innate ability.
Being a Grade 1 jujutsu sorcerer, Kento Nanami is considered an invaluable alumnus at Jujutsu High and respected by the likes of Ino. Ijichi, and Gojo. Nanami’s abilities are best exemplified by the fact that Mahito, a special grade cursed spirit, considers him to be incredibly capable when compared to the average jujutsu sorcerer, deeming him as a legitimate threat. Armed with polished swordsmanship and tactical intellect, Nanami effortlessly dominates curses, and goes on to perform Black Flash. In the anime, Todo reveals that Nanami is the record holder for the most consecutive uses of Black Flash, using it four times, back-to-back. As per Nanami, the ability to unleash Black Flash consecutively is no reason to celebrate, as he deems it easier in comparison to releasing the technique for the first time, which demands hawk-like focus and determination. It is also interesting to note that Nanami compares using Black Flash to being at the center of focused energy, akin to how athletes are trained to perform during a high-stakes sport.
A Grade 3 sorcerer at Jujutsu High, Nobara Kugisaki’s abilities were recognized by Todo, who eventually recommends her to be promoted to a Grade 1 sorcerer. Kugisaki is known for her enhanced physical prowess and pain tolerance, wherein the latter is highlighted during her fight against Eso and Kechizu, during which she withstood the Decomposition Technique. As Kugisaki demonstrates a nuanced understanding of jujutsu and energy manipulation, it is only fitting that she is able to use Black Flash during a crucial juncture. Teaming up with Yuji, she battles Eso and Kechizu, and the duo manages to land a dual blow of Black Flashes on the curse-human hybrids. So far, Kugisaki has been able to use Black Flash only once.
Being one of the primary antagonists of Jujutsu Kaisen, Mahito is a cursed spirit allied with Suguru Geto, the deadliest of curse users. Harboring a disdain for human life, Mahito and his group believe in the eradication of humanity and seek to populate the world with cursed spirits instead. During the Shibuya incident, Mahito learns how to use Black Flash on an unprepraed Yuji, who he strikes at ruthlessly and overwhelms with attacks. Mahito would have most likely defeated both Kugisaki and Yuji, had the fight not been interrupted by Sukuna’s intervention. So far, Mahito has been able to wield Black Flash twice.