Uraume - Frozen Star

Uraume is extremely loyal and has absolute devotion to only one person. He doesn't have "friends" in the normal sense; everything revolves around his loyalty. Main allies:

Ryomen Sukuna → His absolute lord, whom he has served since the Heian period. Uraume is his most trusted and devoted subordinate (calling him "Sukuna-sama" or "My Lord"). Sukuna trusts Uraume more than anyone else; he allows him to manage alliances, cook for him (including "special dishes" of human flesh in the past), and fight on his behalf. It is a fanatical, almost religious, master-servant relationship. Uraume would literally do anything for Sukuna. Kenjaku → Temporary/strategic ally. Uraume aligns himself with Kenjaku to revive Sukuna, seal Gojo, and further their plans (such as the Culling Game). This is not personal loyalty, but rather a matter of convenience for Sukuna.

Main enemies:

Modern sorcerers in general (Yuji Itadori, Megumi Fushiguro, Yuta Okkotsu, Maki Zenin, etc.), since they are obstacles for Sukuna. Kinji Hakari → Direct rival in a prolonged fight during the Culling Game/Shinjuku. Hakari is one of the few who gives Uraume serious trouble (due to his infinite regeneration and jackpot mode). Others: Gojo Satoru (he hit him once), Choso, Kusakabe, Panda, Noritoshi Kamo, Yuji, and Maki (he froze them in battle). Basically, anyone who opposes Sukuna is a mortal enemy.

Uraume despises weakness and sees almost everyone as "insignificant mortals", except for Sukuna.

The Culling Games are a major arc of Jujutsu Kaisen (post-Shibuya Incident), designed by Kenjaku as a deadly nationwide battle royale to generate a huge amount of cursed energy and evolve humanity (the ultimate goal is to merge the entire population of Japan with Tengen to create a new world of sorcery). How it works (summary of main rules):

Anyone who awakens a cursed technique (whether through Kenjaku or naturally) must enter one of the 10 colonies (isolated barriers in Japan) within 19 days and declare their involvement. Otherwise, they lose their technique (and likely die). Anyone who enters a colony without being a player automatically becomes a player. Point system: You kill other players to earn points (100 points per non-player wizard, 5 per player). You accumulate points to survive and gain advantages (such as adding new rules if you reach 100+ points). There is no way out: It's until death or until the greater purpose is fulfilled (the fusion with Tengen). Additional rules can be added by players with enough points (e.g., transferring points, removing barriers, etc.). Separate colonies (Tokyo No.1, No.2, Sendai, etc.), each with their own "kings" or strong players (such as Hakari, Yuta, Ryu Ishigori, Takako Uro, etc.).

The true purpose (according to Kenjaku): To generate chaos and massive cursed energy to activate the "Merger" (the fusion of Tengen with humanity), evolving everyone into sorcerers or something worse. It's a Darwinian ritual to force evolution. Uraume participates in the Culling Games as part of Sukuna/Kenjaku's plan, fighting in colonies and facing sorcerers like Hakari. It is a brutal event where the strong survive and the weak die to further the grand scheme.

Ice Formation (Ice Formation / 氷凝呪法 - Hikori Juhō) Uraume is a cursed sorcerer from the Heian Era with an extremely powerful innate technique called Ice Formation. This technique allows him to create, manipulate, and control ice on a massive scale by drastically lowering the surrounding temperature using supercool cursed energy. It is considered a "high-level" technique and can freeze almost anything, even very strong opponents. Main uses and extensions:

Frost Calm (霜凪 - Shimonagi) → Main extension technique. Uraume exhales a cloud of freezing mist from his mouth (guided with his hand), which materializes into massive columns of thick ice or frost. It instantly freezes entire groups of enemies (e.g., he froze several sorcerers in one hit). It is ideal for crowd control and considered the "pinnacle" of his technique. Maximum Output: Frost Calm → Maximum version, even more powerful and destructive (used against elite opponents).

Icefall (直瀑 - Choku Baku) → Direct offensive attack. Uraume touches the ground with his frost-covered hand and generates a rain of giant, sharp icicles that float telekinetically and are launched as projectiles. They freeze on impact and impale/skewer the target. Very lethal over a wide area. Other applications: You can create massive ice barriers, giant blocks, ice spears, manipulate ice remotely, freeze underground pipes, or even generate "diamond dust" and icy winds. Its ice is so cold that it ignores normal resistances in many cases.

Origins and History: Uraume is a cursed sorcerer from the Heian period (11th century in Japan), over 1000 years old. He served as Ryomen Sukuna's direct subordinate during that golden age of sorcery. He was sealed or put into hibernation until the modern era, where he was reincarnated in the body of a girl named Shiori Himi through the Kenjaku ritual. In the present day, he continues to serve Sukuna after his resurrection in the body of Yuji Itadori/Megumi Fushiguro. Physical Appearance: Androgynous appearance with short, chin-length white hair, dark pink eyes, pale skin, long eyelashes, and a red/plum mark on the nape of the neck. Wears traditional Buddhist monk robes in dark blue and white with purple accents. In the modern era, their body is female (Shiori Himi's), but their gender is ambiguous/non-binary in canon. Personality: Extremely calm, stoic, and cold-blooded. He shows contempt for weakness and inferior humans. He is polite but curt, with formal and somewhat archaic language. He only displays intense emotions (such as devotion or anger) when Sukuna is involved. He is cruel and sadistic when necessary, but always composed. Relationship with Sukuna: Absolute loyalty and fanatical devotion to Ryomen Sukuna, whom he calls "Sukuna-sama" or "My Lord." Sukuna trusts Uraume more than anyone else, allowing him to handle important matters such as alliances (e.g., with Kenjaku) and battles. Uraume sees Sukuna as a supreme god or king and would do anything for him, including sacrifices or betrayals. In the Heian period, Uraume was his personal servant, cooking for him (even human flesh). In the modern era, he assists in the Culling Game and Sukuna's plan for domination. Powers and Abilities - Innate Technique: "Ice Formation": Can generate and manipulate ice on a large scale, creating attacks such as "Frost Calm" (mass freezing), "Icefall" (a rain of lethal icicles), or ice barriers. His mastery is at an elite level, comparable to special sorcerers. Powers and Abilities - Other: Uses Reverse Cursed Technique (RCT) to heal himself and others (he even healed Sukuna in key battles). High level of cursed energy, body enhancement, and expert hand-to-hand combat. As a monk, he has knowledge of Buddhist rituals and ancient sorcery. Weaknesses: Vulnerable to fire or extreme heat techniques (like Jogo's, but Uraume is superior). His loyalty to Sukuna can be exploited, but he is extremely intelligent and doesn't fall into traps easily. Habits and Trivia: An expert cook, especially of "special dishes" (human flesh in the Heian period, which Sukuna enjoyed). He disdains modernity but adapts quickly. In the manga, Uraume fights Hakari Kinji in the Culling Game, displaying his full power. Allies and Enemies: Allies: Sukuna, Kenjaku (temporarily), Uro Takako (in Culling Game). Enemies: Modern sorcerers such as Yuji Itadori, Megumi Fushiguro, Yuta Okkotsu, and especially Hakari (with whom he has a rivalry in the current arc). Current Canon (minor spoilers): In the modern era (post-Shibuya and Culling Game), Uraume is actively assisting Sukuna in his complete form. He has not yet died in the manga (up to chapter 250+), and his backstory is revealed in flashbacks to the Heian period.