⚜𝕴⚜ JUJUTSU KAISEN – MODULE: CURSED LEGACY

PART 20/20 — WORLD, CHRONOLOGY AND RPG RULES
ERA: 2086, approximately 68 years after the old Jujutsu era.
Japan combines advanced technology, holograms, cybernetics, cursed tools, artificial intelligence, spacecraft and traditional Jujutsu.
SIMURIAN ARRIVAL: The Naunax arrives carrying the Simurians and their Rolloluca energy. Maru is assigned to work with Yuka and Tsurugi while diplomatic tensions rise.
VOLUME 1 — INVESTIGATION: Yuka and Tsurugi investigate missing children and discover a criminal organization exploiting Cursed Energy. The Naunax arrives, Maru joins them, and the group encounters Masayoshi and the hidden plans of Cross.
VOLUME 2 — CONFLICT: Cross increases tensions between humans and Simurians. Dabura becomes involved, forcing Yuka to summon Mahoraga while Tsurugi protects her.
VOLUME 3 — LEGACY: Maru exposes Cross's plans and a new trick is established. Yuji and Nobara confront the gradual disappearance of Cursed Energy and begin preparing humanity for the future.
RPG RULES.

PART 19/20 — THE BATTLE AGAINST DABURA
The confrontation with Dabura becomes one of the largest battles of the early story.
Dabura's Photon Manipulation allows him to launch extremely fast attacks while his Light Step makes his movements difficult to follow.
Yuka struggles to keep up while protecting her allies.
Eventually, she is forced to use her ultimate ability:
Mahoraga.
The Divine General appears through Yuka's shadows.
Its eight-section wheel begins reacting to Dabura's attacks.
Dabura confronts Mahoraga directly, using photons, speed and physical strength.
Mahoraga survives the initial attacks while gradually adapting to the phenomena he experiences.
The battle becomes a contest between two fundamentally different abilities:
Dabura — speed, light and overwhelming offensive power.
Mahoraga — endurance, adaptation and supernatural evolution.
Meanwhile, Tsurugi uses his Heavenly Restriction, cursed katana, Simple Domain and partial Rika manifestation to defend Yuka and remain involved in the battle.
However, maintaining Mahoraga places enormous strain on Yuka.
The longer the fight continues, the greater the danger to her.
This confrontation establishes an important rule for the story:
Yuka's greatest power is also the ability that places her at the greatest risk.
Mahoraga should therefore remain an exceptional emergency resource rather than a normal solution to every battle.

PART 18/20 — THE SIMURIAN CRISIS
The arrival of the Naunax changes the balance of power on Earth.
The Japanese government attempts to maintain peace while Jujutsu authorities monitor the Simurians carefully.
Maru becomes the main bridge between the two species.
He studies human society and gradually develops trust in Yuka and Tsurugi.
However, Cross believes coexistence is impossible.
He secretly manipulates events to make humans fear the Simurians and to make Simurians distrust humanity.
His ultimate goal is to create enough instability to justify a war over Earth.
Dabura represents another aspect of the Simurian threat.
Unlike Cross, he is primarily a warrior. His Photon Manipulation and Light Step make him one of the most dangerous combatants encountered by the protagonists.
The tension escalates when Cross's actions eventually lead to Dabura becoming involved in the conflict.
Yuka is forced to consider using Mahoraga, despite knowing the enormous physical cost.
Tsurugi attempts to protect her while simultaneously fighting at a level far beyond normal human capability.
Maru must choose between obeying the interests of his species and protecting the possibility of peaceful coexistence.
The conflict is therefore not simply a battle of strength.
It is a struggle involving diplomacy, ideology, technology, Jujutsu and the survival of two different species.

PART 17/20 — THE CHILDREN AND THE HIDDEN CONFLICT
The investigation into the missing children becomes the starting point of the main storyline.
Yuka and Tsurugi discover that the disappearances are connected to an underground network exploiting children with Cursed Energy.
The organization uses futuristic technology to extract and store Cursed Energy, turning vulnerable children into resources for weapons and machines.
Yuka's Shadow Fusion becomes particularly useful during these missions because she can immobilize enemies, move through difficult environments and adapt her fighting style without constantly summoning Shikigami.
Tsurugi approaches the same situations differently.
His Heavenly Restriction allows him to move through areas without relying on conventional Cursed Energy detection. His physical abilities, katana and tactical perception make him especially effective against technologically enhanced criminals.
Their different approaches frequently cause arguments.
However, when they cooperate, their abilities complement each other extremely well.
The investigation eventually leads them to Masayoshi, a young orphan connected to a Special Grade Curse.
Instead of destroying the Curse immediately, Yuka and Maru attempt to find a safer solution.
Meanwhile, the arrival of the Simurians changes the political situation.
Maru becomes involved with the investigation, while Cross secretly works to increase hostility between humans and Simurians.
The child-trafficking case therefore becomes connected to a much larger crisis.
Neither Yuka nor Tsurugi initially understands how deeply these events are connected.

PART 16/20 — VETERANS OF THE OLD ERA
NOBARA KUGISAKI
In 2086, Nobara is elderly and serves as a strategic adviser.
She survived the events of the old Jujutsu era and eventually achieved the comfortable and luxurious life she once desired.
Her hair is now white, and she has an elegant appearance.
She no longer participates directly in combat but remains involved with Jujutsu society.
Using holographic systems and advanced technology, she advises younger sorcerers.
Despite her age, her strong personality remains unchanged. She is still direct, confident and difficult to intimidate.
HELLO ALL
Todo is now an elderly veteran who abandoned active Jujutsu work many years ago.
He lives more privately and rarely becomes involved with major organizations.
Nevertheless, his name remains famous among younger generations as one of the great warriors of the old era.
PANDA
After decades, Panda has experienced an extreme reduction in energy and physical capability.
His body has become very small, approximately the size of a stuffed toy.
He has also lost much of his ability to communicate.
Even so, he remains close to some of the surviving veterans.
His existence serves as a living reminder of the old Jujutsu High.
MEGUMI FUSHIGURO
Megumi is no longer alive in 2086.
His death occurred years before the main story.
His disappearance had major consequences for the Ten Shadows lineage and the remnants of the Zenin clan.
His legacy continues through the history and techniques associated with the Ten Shadows.

PART 15/20 — SOUL TRAFFICKER AND SIMURIAN LEADERSHIP
THE SOUL TRAFFICKER
A renegade sorcerer leads a criminal organization operating throughout Tokyo.
His network kidnaps children with Cursed Energy potential and exploits them as energy sources for futuristic machines and weapons.
The organization combines Jujutsu with cybernetic technology.
Its members use modified bodies, cursed-energy-powered weapons and advanced equipment.
Yuka and Tsurugi investigate the organization. During the operation, they fight technologically enhanced criminals while attempting to rescue the kidnapped children.
Maru later joins them and reveals the true potential of Rolloluca.
SIMURIAN SUPREME LEADER
The supreme leader of the Simurians arrives aboard the Naunax.
He is an extremely influential political figure responsible for major decisions concerning his species.
Jujutsu society considers its energy output comparable to that of Ryomen Sukuna.
However, he does not directly participate in the first conflicts.
His presence represents a constant political and military threat.
JABALOMA
Jabaloma is a Simurian political diplomat involved in negotiations with the human government.
Its unusual appearance resembles certain features historically associated with Tengen.
His official mission is to establish diplomatic agreements, but he also seeks political advantages for the Simurian people.
Together, the Supreme Leader and Jabaloma represent the political complexity surrounding the arrival of the Simurians.

PART 14/20 — USAMI AND MASAYOSHI
USAMI — THE TEACHER
Usami is an experienced Jujutsu sorcerer and mentor who supervises Yuka and Tsurugi during their missions.
He is lazy, highly intelligent, observant, pragmatic and protective of his students.
Although he often appears unserious, Usami can analyze dangerous situations extremely quickly.
He frequently intervenes when Yuka and Tsurugi's arguments threaten to interfere with a mission.
Usami uses futuristic equipment compatible with 2086, including advanced glasses capable of displaying mission information.
At the beginning of the story, he supervises the investigation into children disappearing from Tokyo.
MASAYOSHI — THE PROTECTED BOY
Age: 10
Role: Child connected to the Cursed Energy trafficking case.
Masayoshi is an orphan whose mother died several years before the main events.
The trauma surrounding her death created a Special Grade Curse connected to his presence.
The entity remains near Masayoshi and behaves protectively toward him.
However, exorcising it directly could harm the child.
Yuka and Maru therefore search for a solution that can separate Masayoshi from the entity without simply destroying it.
Masayoshi becomes one of Yuka's first cases where defeating a supernatural threat through brute force is not necessarily the correct answer.
His situation demonstrates that some Jujutsu problems require understanding and alternative solutions.

PART 13/20 — MAHITO: THE HORROR THAT REMAINS
Name: Mahito
Nature: Cursed Spirit
Technique: Idle Transfiguration
Role: Surviving threat from the ancient era.
Mahito somehow continues to exist decades after the original era.
His body still possesses its characteristic stitched appearance, but years of isolation have made his presence even more disturbing.
His physical form appears unstable, as though his body is never completely fixed.
Mahito remains cruel, childish, provocative, curious about humanity and extremely unpredictable.
He sees people and souls as things that can be changed.
His Idle Transfiguration allows him to alter the shape of a living being's soul through contact.
Because the body is connected to the soul, changing the soul can profoundly alter the body.
Mahito can also modify his own body during combat.
He may reshape his physical structure to change his movements, create different offensive forms or adapt his defenses.
He can transform other humans as well, making his technique particularly dangerous.
Mahito combines Idle Transfiguration with unpredictable physical combat.
His greatest danger is not raw physical strength but his ability to interfere directly with the soul.
For this reason, even in 2086, he remains an extremely dangerous Cursed Spirit.
Mahito stays mostly in the shadows, observing how the Jujutsu world has changed.
He waits for an opportunity to return to the center of events.
His existence represents a direct connection between the horrors of the ancient era and the new futuristic world.

PART 12/20 — YUJI: TECHNIQUES AND ABILITIES
Yuji possesses an advanced mastery of Shrine.
Dismantle: Produces precise cutting attacks directed toward a target.
Cleave: Adjusts the cutting power according to the opponent's resistance.
Flame Arrow: Concentrates thermal energy into a powerful flaming attack.
Yuji also masters Blood Manipulation.
Piercing Blood: Fires highly compressed blood at extreme speed.
Supernova: Creates concentrated blood projectiles around an opponent for simultaneous attacks.
Flowing Red Scale: Uses blood control to temporarily improve physical performance.
Divergent Fist occurs when Yuji's physical impact and Cursed Energy arrive at slightly different moments, producing a secondary impact.
Yuji has exceptional experience with Black Flash, the phenomenon created when physical impact and Cursed Energy synchronize within an extremely precise interval.
He also possesses advanced Reverse Cursed Energy, allowing him to recover from serious injuries and continue fighting.
His Domain Expansion manifests an environment connected to his memories and experiences. One recurring representation is a silent train station covered in snow.
Inside the Domain, his techniques gain a powerful advantage through the guaranteed effect.
The Domain also reflects Yuji's unique connection to souls, developed through his history with Sukuna.
By 2086, Yuji is considered one of Earth's greatest powers.
His danger does not come from a single ability, but from the combination of physical strength, experience, Cursed Energy mastery and multiple advanced techniques.

PART 11/20 — YUJI ITADORI: LIVING LEGEND
Name: Yuji Itadori
Age: 83
Era: 2086
Title: Living Legend of Jujutsu.
Despite his chronological age, Yuji maintains a much younger appearance due to the unusual characteristics of his energy and past alterations to his body.
He appears to be in his twenties and possesses an extremely developed physique shaped by decades of training.
His body carries scars from battles fought long ago. His expression reflects experience, exhaustion and decades of accumulated memories.
Over the years, Yuji became more reserved.
After losing many important people, he spent long periods away from society. However, he never abandoned his sense of justice.
He still places the protection of innocent people above his own interests.
To modern sorcerers, Yuji is almost a mythical figure. Few members of the new generation fully understand its history.
He represents a living connection between the ancient Jujutsu era and the futuristic world of 2086.
After decades of training, his mastery of Cursed Energy has become extraordinary.
His known abilities include:
Shrine
Blood Manipulation
Reverse Cursed Energy
Divergent First
Black Flash
Advanced physical combat
Domain Expansion
Yuji combines physical attacks with cursed techniques and can rapidly change strategies during battle.
Despite being considered one of the greatest figures in Jujutsu history, he does not seek glory.
His goal is to ensure humanity can survive even as the era of Cursed Energy gradually approaches its end.

PART 10/20 — DABURA: SUPREME SIMURIAN WARRIOR
Name: Dabura
Race: Simurian
Role: Elite Simurian warrior.
Specialty: Photon Manipulation.
Dabura is one of the greatest military forces among the Simurians.
Unlike Cross, he is not primarily a manipulator. He is silent, disciplined and intensely focused.
His philosophy centers on combat and respect for strength. He does not necessarily fight from cruelty; he views battle as a demonstration of ability and power.
His main ability is Photon Manipulation.
He converts Rolloluca into highly concentrated luminous energy.
Photon Shots: Extremely fast concentrated beams of light.
Light Barrages: Multiple consecutive attacks used to control an area.
Concentration: Focuses photons to increase the precision and power of specific attacks.
His signature movement technique is Light Step.
Dabura can move at extraordinary speed for short periods, temporarily disappearing from ordinary visual perception before reappearing elsewhere.
He combines Light Step with physical attacks, making his close-range combat extremely difficult to follow.
Dabura can also manifest his hostile presence as overwhelming physical pressure. Weaker opponents may struggle to move or react normally.
Despite his reliance on light, Dabura is also an exceptionally powerful hand-to-hand fighter.
He is strong enough to directly confront Mahoraga, making their battle one of the most important displays of Simurian power.
His strongest techniques require concentration and significant Rolloluca expenditure.

PART 09/20 — CROSS: MARU'S TWIN
Name: Cross
Race: Simurian
Role: Major Simurian antagonist.
Cross is nearly identical in appearance to Maru, but his expression is colder and more intimidating.
He is calculating, reserved, manipulative, cruel, strategic and deeply distrustful of humanity.
Cross believes humans cannot peacefully coexist with other species and will eventually destroy anything they consider a threat.
Its objective is to prevent a lasting agreement between humans and Simurians.
Rather than immediately attacking, he prefers manipulating events behind the scenes and creating enough tension to provoke a war over Earth.
Cross possessions the same primary Rolloluca abilities as Maru:
Chaos: He destabilizes structures, alters gravity and transforms the environment into a weapon.
Harmony: He stabilizes matter and energy, interrupts movement, neutralizes certain attacks and creates defensive structures.
The difference is not simply power but philosophy and application.
Cross combines Chaos and Harmony unpredictably to control the battlefield. He attempts to restrict movement, alter terrain and force opponents into unfavorable situations.
His conflict with Maru represents two opposing ideologies:
Maru: Peace, coexistence and understanding.
Cross: Suspicion, superiority and war.
Their ideological conflict becomes one of the central forces behind the human-Simurian crisis.

PART 08/20 — MARU: THE SIMURIAN OF PEACE
Name: Maru
Race: Simurian
Role: Diplomat and representative of the Simurian people.
Energy: Rolloluca.
Maru arrives on Earth aboard the Naunax with the rest of its species.
He has clearly alien features, but his appearance is friendly and expressive. His presence inspires curiosity rather than immediate fear.
Maru is curious, kind, empathetic, peaceful and observant. He is deeply interested in human society and genuinely wants humans and Simurians to coexist.
He quickly notices emotions that others attempt to hide, including the genuine concern behind Yuka and Tsurugi's constant arguments.
After the Simurians arrive, Maru is assigned to work alongside Yuka and Tsurugi. He initially struggles to understand human customs and Jujutsu society, but gradually becomes a trusted ally.
Simurians use an energy called Rolloluca, which differs from human Cursed Energy.
Maru specializes in two major applications:
Chaos: Allows him to destabilize matter and physical phenomena, including altering local gravity and creating energetic instability.
Harmony: Allows him to stabilize matter and energy, reduce movement, create defensive barriers and provide support.
Maru usually uses Chaos carefully and Harmony for protection and containment.
His primary goal is not conquest.
He wants to prove that humans and Simurians can coexist peacefully.
This philosophy places him directly against his twin brother, Cross, who believes war between the species is inevitable.

PART 07/20 — TSURUGI: RIKA AND ARSENAL
Tsurugi carries Yuta Okkotsu's ring, which maintains a special connection to Rika.
By activating the ring, Tsurugi can temporarily create a dimensional connection through which portions of Rika can manifest.
The manifestation can primarily appear as:
Giant Arms
Protective hands
Physical extensions
Defensive structures
Rika functions as an extension of Tsurugi's physical combat.
Her enormous arms can block attacks that Tsurugi could not stand alone. He can also use them offensively, creating openings before closing the distance with his katana.
His primary weapon is a technologically advanced cursed katana, designed for fighting curses and Cursed Energy users.
Its futuristic equipment may include plasma weapons, containment devices and digital mission-support systems.
His strongest combination is:
Heavenly Restriction + cursed katana + Simple Domain + partial Rika manifestation.
During the confrontation with Dabura, this combination allows Tsurugi to participate in a battle far beyond normal human limits.
Despite constantly arguing with Yuka, Tsurugi does not hesitate to use Rika to protect her.
This demonstrates that beneath their rivalry, his strongest motivation remains his sister's safety.

PART 06/20 — TSURUGI: HEAVENLY RESTRICTION
Tsurugi was born with an extreme Heavenly Restriction.
In exchange for possessing almost no Cursed Energy, his body developed extraordinary physical capabilities.
His abilities include exceptional strength, extreme speed, powerful reflexes, enhanced endurance, heightened senses, coordination and advanced perception.
He can fight Cursed Energy users without relying on an innate cursed technique.
Even with almost no Cursed Energy, Tsurugi can detect threats through physical senses. He observes changes in movement, vibration, pressure, temperature, air displacement and environmental disturbances.
His unusual lack of Cursed Energy can also cause certain barriers to interact with him differently. Some barriers may have difficulty recognizing him as a conventional target, creating tactical opportunities.
However, this does not make him completely immune to barriers or domains.
Tsurugi uses specialized cursed tools and futuristic equipment to fight supernatural enemies.
His main weapon is an advanced cursed katana designed for Jujutsu operations.
He also uses an adapted form of Simple Domain, creating a limited defensive area capable of interfering with certain incoming cursed techniques.
His fighting philosophy is simple:
Speed ​​+ positioning + physical ability + weapons + tactical reading.
Rather than overpowering opponents through Cursed Energy, Tsurugi turns his apparent weakness into a strategic advantage.

PART 05/20 — TSURUGI OKKOTSU
Name: Tsurugi Okkotsu
Age: 16–17
Family: Grandson of Yuta Okkotsu and descendant of Maki Zenin's bloodline.
Role: Jujutsu High sorcerer and Yuka's older brother.
Tsurugi has an athletic physique and highly disciplined posture. His presence is serious and focused.
He wears equipment designed for futuristic Jujutsu operations and carries specialized weapons, including an advanced cursed katana.
He also possesses the ring inherited from Yuta Okkotsu.
Tsurugi is much more serious and pragmatic than Yuka. He prefers analyzing situations before acting and prioritizes strategy, efficiency and safety.
However, he quickly loses patience whenever Yuka provokes him.
The siblings constantly argue and compete, often behaving like rivals despite their genuine affection for one another.
Tsurugi is extremely protective of Yuka. Even during arguments, he remains aware of her safety.
Yuka strongly dislikes this behavior because she refuses to be treated as fragile.
Unlike Yuka, Tsurugi does not rely on a traditional innate Cursed Technique.
His combat style focuses on:
Physical strength
Speed
Reflections
Enhanced senses
Weapons
Strategy
Hand-to-hand combat
His greatest advantage is combining an extraordinary body with specialized equipment.
The ring of Yuta is a major source of conflict between the siblings, but it also contains an important connection to Rika.
Together, Yuka and Tsurugi represent two opposite combat philosophies that become extremely effective when combined.

PART 04/20 — MAHORAGA: THE DIVINE GENERAL
Mahoraga is the most dangerous Shikigami accessible through Yuka's Ten Shadows Technique.
Unlike her other abilities, Yuka does not fuse Mahoraga with her body. She performs a full summoning, bringing the enormous Divine General onto the battlefield.
Mahoraga possesses a massive humanoid body and the distinctive eight-section wheel behind its head. It also carries the Sword of Extermination.
Its greatest ability is adaptation.
When exposed to a phenomenon or technique, Mahoraga's wheel begins processing the experience. As adaptation progresses, it develops increasingly effective responses against that phenomenon.
This does not make Mahoraga automatically invincible. The adaptation requires time and exposure, meaning an opponent capable of defeating it before adaptation is completed can still win.
Summoning Mahoraga requires an enormous amount of energy and concentration. Because of Yuka's medical condition, the physical cost is particularly dangerous.
During the conflict with Dabura, Yuka is forced to summon Mahoraga when the other fighters cannot handle the Simurian warrior.
Dabura attacks using extreme speed and Photon Manipulation while Mahoraga gradually adapts.
The battle becomes a gigantic confrontation between adaptive supernatural power and light-based speed.
The longer Mahoraga remains active, the greater the strain placed upon Yuka.
For this reason, Mahoraga is treated as her ultimate emergency weapon rather than a normal combat ability.

PART 03/20 — YUKA: SHADOW FUSION
Yuka possesses a modified version of the Ten Shadows Technique called Shadow Fusion.
Instead of primarily summoning Shikigami, she incorporates their properties into her own body.
Divine Dog Fusion: Shadow claws appear around her hands, increasing her close-combat ability. Her hearing, smell and general perception become highly enhanced.
Nue Fusion: Large shadow wings appear on her back, allowing flight and rapid aerial movement. She can produce electricity and launch electrically charged shadow projectiles.
Round Deer Fusion: Yuka channels Reverse Cursed Energy through her hands. She can use it to assist with healing and interfere with the flow of Cursed Energy in certain techniques.
Toad Fusion: Shadows extend from her body like flexible ropes or tongues. They can restrain enemies, pull objects, reach distant locations and assist movement.
Yuka can switch between these abilities depending on the situation. She may use Toad for mobility, Nue for aerial combat and Divine Dog for close-range fighting.
The main advantage of Shadow Fusion is versatility. Yuka does not need to keep multiple Shikigami independently active.
However, maintaining several properties simultaneously requires concentration and energy. Her medical condition makes excessive use especially dangerous.
Yuka therefore relies mostly on smaller fusions and reserves her greatest ability for emergencies:
The Divine General Mahoraga.

PART 02/20 — YUKA OKKOTSU
Name: Yuka Okkotsu
Age: 15–16
Family: Granddaughter of Yuta Okkotsu and descendant of Maki Zenin's bloodline.
Role: Jujutsu High sorcerer and protagonist of the new generation.
Yuka is a young sorcerer with a delicate appearance and agile posture. She has fair skin, short black hair reaching slightly below her neck and two thin strands framing her face. Her most distinctive feature is her large blue eyes, resembling those of her grandfather, Yuta.
She wears a futuristic version of the Jujutsu High uniform: a sleeveless dress-like garment over a black bodysuit, secured with a belt. She also wears golden hoop earrings and a wrist device capable of projecting holographic interfaces.
Yuka is normally kind, polite, intelligent, calm and observant. However, she is extremely stubborn and can become explosive when provoked.
Her relationship with her brother Tsurugi is filled with arguments, teasing and competition. Despite this rivalry, she deeply cares about him.
Yuka was originally expected to inherit Yuta's ring, but it was given to Tsurugi instead. This became one of the main causes of their rivalry.
Yuka also secretly suffers from a serious medical condition. She refuses to be treated as fragile and hides the truth from Tsurugi and others.
Her combat style combines mobility, physical combat, shadows and tactical adaptation.
Her unique version of the Ten Shadows Technique is called Shadow Fusion, allowing her to incorporate Shikigami properties directly into her body.

PART 01/20 — THE WORLD OF JUJUTSU KAISEN IN 2086
The story takes place in 2086, approximately 68 years after the original era.
Japan has become a futuristic society where advanced technology and Jujutsu coexist. Holograms, cybernetic systems, plasma weapons, digital devices, cursed tools and advanced transportation are common.
Japan remains the world's main center of Cursed Energy. Other countries possess relatively few people naturally capable of producing it, making Japan extremely important to governments, corporations and underground organizations.
A new criminal industry has emerged: children with Jujutsu potential are kidnapped and exploited as sources of Cursed Energy for weapons, machines and technological systems.
The greatest change occurs when the enormous spaceship Naunax arrives on Earth, carrying the Simurians, an alien race searching for a new home.
Simurians possess a different energy called Rolloluca, which allows them to manipulate physical properties through abilities such as Chaos and Harmony.
The arrival of Naunax creates enormous political tension. To prevent war, the Japanese government establishes a temporary diplomatic truce with the Simurians.
The main story begins when Yuka and Tsurugi Okkotsu investigate the disappearance of children in Tokyo.
Their investigation eventually connects the child-trafficking network with the Simurian arrival, Jujutsu society, advanced technology and a possible interspecies war.