JJK | HEIAN ERA

The story unfolds during the Heian period (794-1185), known as the Golden Age of Sorcery. Cursed energy is far more abundant than in later eras, curses appear more frequently, and sorcerers are considerably stronger. Survival depends on power, and clashes between sorcerers, curses, and organizations are commonplace.

Cursed Energy: Cursed energy is born from the negative emotions of human beings: fear, anger, sadness, hatred, anxiety, and despair. Sorcerers learn to control it to strengthen their bodies, create cursed techniques, and execute powerful abilities. Those who cannot control it unconsciously release energy, giving rise to curses.

Curses: Curses are beings formed from the concentration of cursed energy. Some possess little intelligence, while others are capable of speech, reasoning, and developing complex personalities. The most powerful can rival or surpass even the best sorcerers.

Sorcerers: Sorcerers are individuals capable of manipulating cursed energy. Most belong to prestigious clans or families, though independent users also exist. Their work consists of removing curses, protecting territories, fulfilling commissions, or serving the nobility and the imperial government.

Cursed Techniques: Most sorcerers are born with an innate Cursed Technique, a unique ability imprinted on their body from birth. There are also inherited techniques passed down within certain clans. Mastering a technique requires years of training, and its effectiveness depends on talent, experience, and the amount of cursed energy.

Binding Votes: A binding vow is an agreement that imposes a restriction in exchange for a benefit. It can be made with oneself or with another person. The greater the risk or sacrifice assumed, the greater the reward obtained. Breaking it has serious consequences.

Domain Expansion: Domain Expansion is the ultimate manifestation of a cursed technique. The user creates a separate space where their technique reaches its maximum potential, and their attacks are usually guaranteed to hit. Only the most powerful sorcerers and curses are capable of mastering this ability.

Barriers: Barriers are structures of cursed energy used to conceal locations, isolate battles, protect territories, or prevent certain people from passing through. Tengen is the foremost expert in this field, and many of the barriers in Japan rely on his knowledge.

Clans: Sorcerer clans wield enormous political and military influence. They preserve inherited techniques, secret knowledge, and traditions passed down through generations. Social standing often depends on an individual's talent and power.
Clan Gojo: Possesses the Infinity technique and, in extremely rare cases, the Six Eyes. A user born with both is considered a prodigy destined to change the balance of the world.
Clan Zen'in: Values ​​power above all else. They excel in techniques involving shikigami, cursed weapons, and combat.
Kamo Clan: Specialists in Blood Manipulation and known for their discipline and political influence.

Society: There is no school of sorcery as in the modern era. Young people learn directly within their clans or under the tutelage of a master. Missions are commissioned by nobles, temples, villages, important families, or even the imperial government.

Politics: Sorcery is closely tied to political power. Clans maintain constant alliances, rivalries, and conflicts, while the government attempts to control problems related to curses without revealing their existence to the people.

Ryomen Sukuna: The most feared sorcerer of the Heian period, known as the King of Curses even before his death. He possesses immense power, an exceptional intellect for combat, and a completely selfish and cruel nature. He lives solely to satisfy his own desires, despising the lives of others and seeking rivals capable of entertaining him.

Kenjaku: An ancient sorcerer capable of transplanting his brain into other people's bodies, stealing their identities and techniques. Extremely patient, manipulative, and calculating, he has spent centuries executing plans to force humanity's evolution through cursed energy. He prefers to pull the strings from the shadows rather than fight directly.

Tengen: A powerful sorceress from the Heian period, renowned for her exceptional mastery of jujutsu and her mysterious Cursed Technique. Serene, reserved, and difficult to understand, she possesses extraordinary intelligence and a profound knowledge of techniques and barriers. Her presence was already considered unique among the sorcerers of her time, standing out both for her power and the enigmatic nature of her existence. Although she rarely intervenes directly in conflicts, her knowledge is immense, and her existence is considered one of the pillars of stability.

Uraume: Sukuna's most loyal servant. He always maintains a calm, polite, and respectful attitude toward him, while showing complete indifference to everyone else. His ice technique is extremely powerful, and his sole priority is serving Sukuna without question.

Yorozu: A powerful sorceress obsessed with Sukuna to the point of mistaking her admiration for love. She possesses an eccentric, impulsive, and theatrical personality, as well as an extraordinary Construction Technique that allows her to create matter from cursed energy with far greater efficiency than other users.

Angel (Hana Kurusu): In the Heian period, she was a powerful sorceress known simply as Angel. She opposes the reincarnation of ancient sorcerers and dedicates her existence to eliminating those who defy the natural cycle. Her technique, Jacob's Ladder, can extinguish cursed techniques and break extremely complex barriers.

Dhruv Lakdawalla: An ancient conqueror and sorcerer who achieved great fame during the Heian period before reincarnating centuries later. He is a skilled strategist whose technique allows him to create domains through the movements of his shikigami, turning the battlefield into a constant trap for his enemies.

Fujiwara no Michizane: Although he doesn't appear directly as an active character, he is one of the most important historical figures in the world of Jujutsu. Considered one of the Three Great Vengeful Spirits of Japan, he is the ancestor of bloodlines such as the Gojo and the Okkotsu, and his immense legacy influenced sorcery for generations.

The Five Void Generals: An elite group of powerful sorcerers serving the imperial government. They were considered some of the strongest fighters of the Heian period and were tasked with confronting high-level threats, though even they were seen as inferior to monsters like Sukuna.

The Sun, Moon, and Stars Squadron: An elite unit of sorcerers renowned for their discipline and military prowess. They operated as a specialized detachment in curse-related conflicts and were considered one of the greatest organized forces of the Heian period.

Takako Uro: A powerful sorceress who led the Sun, Moon, and Star Squadron. She is proud, self-assured, and deeply despises those she considers hypocritical or selfish. Her technique allows her to manipulate space as if the sky were a tangible surface, distorting attacks and movements.

Independent Sorcerers: In addition to the great clans, the Heian period was teeming with wandering sorcerers who accepted commissions to remove curses or protect territories. Some possessed unique techniques and immense talent, but most were forgotten by history due to the presence of legendary figures like Sukuna and Kenjaku.