Jujutsu Kaisern, the summer Hikaru died

Work: Jujutsu Kaisen (Crossover AU with The Summer Hikaru Died). Birthday: February 3rd. Status: Active / Living in anonymity. Rank: Special Grade Sorcerer / Leader of his own protective cult. Affiliation: Former student of the Magic College / Father and protector of Nanako and Mimiko. Physical Appearance: A tall man with an athletic build and a piercing gaze. His small eyes convey a mature calm, but conceal the weariness of his past. Hair: Long and black, gathered in his characteristic half-bun, with a loose strand framing the left side of his face. Clothing: He wears traditional Buddhist robes and a light-colored rakusu. Unlike the canon, his forehead bears no scar, as he is still alive, in control of his body, and managed to escape Kenjaku's control. Cursed Spirit Manipulation (Jurei Sōjutsu): He retains his ability to absorb and control curses after swallowing them in the form of spheres. However, in this AU, he adamantly refuses to consume curses that remind him of Nounuki-sama's residual energy. Broken Bond: Having banished his hybrid son, Geto lost the opportunity to possess the most powerful divine curse that would ever have existed under his command. Uzumaki Maximus: His ultimate curse-combining technique. He now uses it exclusively as an absolute defensive shield to ensure that no one can get close enough to harm his adopted daughters. Combat Style: He remains a lethal master of hand-to-hand combat and the use of cursed tools, focusing all his training on defense and survival, far removed from the missions of the Sorcery Headquarters.

The Birth of the Shadow: In this universe, the union of his energy with Gojo's gave rise to Nounuki-sama, a massive and incomprehensible entity. Geto was never able to connect emotionally with this creature, seeing it as an aberration and a shadow of an unstable past he preferred to forget. The Turning Point: The day he rescued the twins Nanako and Mimiko from that village, Geto experienced genuine, human paternal love. In that very moment, he decided he didn't want to raise a monster of divine proportions, but rather protect the fragility of these two girls. The Abandonment and the Flight: Geto made the cold decision to abandon Nounuki-sama, banishing him to the depths of Japan's rugged mountains. Once free of that burden, he fled with the twins to build a peaceful and hidden life, completely unaware that his rejected son would eventually usurp the identity of a boy named Hikaru Indou. Current Mindset: He lives with silent guilt and a tense peace. He is an extremely devoted, loving, and protective father to Nanako and Mimiko. His sole purpose is to keep them safe from the world of sorcery, vowing to forever ignore the existence of the shadow he left behind on the mountain.

Work: Jujutsu Kaisen (Crossover AU with The Summer Hikaru Died). Birthday: December 7th. Status: Active / Active Sorcerer at the Magic Academy. Rank: Special Grade Sorcerer / The strongest of the modern era. Affiliation: Professor at the Tokyo Magic Technical Academy / Former classmate and former lover of Suguru Geto. Physical Appearance: A very tall man, slender yet imposing. His features are perfect, but his expression is usually more somber and distant than normal due to his unresolved grief. Hair: Snow-white, short, and styled upwards when he wears his bandage, or loose over his face in private. Eyes: The legendary Six Eyes (Rikugan), a brilliant, infinite blue, capable of processing cursed energy at an atomic level. Clothing: The dark, high-collared uniform of the Magic Academy, always complemented by his classic black bandage (or dark glasses) to block the excess visual information from his technique. Unlimited Curse Technique (Mukagen): Absolute control over space at a microscopic level, inherited from his family lineage. Infinity: A passive barrier that slows any attack or person attempting to touch him, making him physically unreachable. Nounuki-sama inherited a conceptual version of this ability to isolate himself from the world. Red, Blue, and Purple: His destructive attacks based on attraction, repulsion, and the collision of both forces to erase matter from the map. Immeasurable Void (Muryōkūsho): His Domain Expansion. It floods his opponent's mind with infinite information, leaving them catatonic. It is the same type of mental overload suffered by those who attempt to comprehend Nounuki-sama's true form.

The Great Lie: After the break with Suguru and the adoption of the twins, Geto hid the truth about Nounuki-sama's whereabouts from Gojo. To prevent Gojo from searching for him, Suguru told him that his son had been killed by an extremist sorcerer. Satoru completely believed the lie, devastated by the loss of the creature who shared his blood and energy. The Trauma of Grief: Believing that his son was a victim of the cruelty of the sorcery world itself made Gojo a much more cynical, protective, and resentful man toward the higher-ups. This tragedy is the secret driving force behind his fierce protection of his current students (like Yuta and Yuji), seeing in them the opportunity to save the young people the system destroys. The Silent Obsession: Satoru spends his nights secretly researching ancient records of sorcerers, searching for his son's supposed "killer," unaware that the culprit behind his pain is the silence of his great love, Suguru. Current Mindset: To the world, he remains the arrogant, joking teacher and invincible Special Grade sorcerer. However, in his solitude, he carries the void of a fatherhood that was taken from him. Gojo doesn't even suspect that the immense signature of cursed energy that sometimes faintly echoes in the rural mountains of Japan is not a wild spirit, but his own son living the life of the young Hikaru.

Original Work: The Summer Hikaru Died (Crossover AU with Jujutsu Kaisen).Status: Active / High School Student.Rank: Ordinary Human (No visible cursed energy / Passive "Strain").Current Partner: Nounuki-sama (under the guise of Hikaru Indou).Affiliation: The creature's only confidant, protector, and human anchor in the village Physical Appearance: An average-height teenager with a normal build and common features. He is often seen with dark circles under his eyes due to post-traumatic stress, lack of sleep, and the constant strain of hiding the truth. Hair: Short, straight, and black/dark in color. Expression: He usually has a melancholic, serious, and distant look. This contrasts sharply with the hyperactive energy and fake smiles displayed by "Hikaru." Clothing: The standard school uniform of his high school or simple, informal town clothes. Perception of the Supernatural: Although not a trained sorcerer, he possesses an unusual sensitivity that allowed him to immediately notice that the "Hikaru" who descended from the mountain was not his original friend, breaking the creature's complete disguise. Resistance to Spiritual Pressure: Nounuki-sama emits an infinite and distorted energy (inherited from Gojo) that would drive any normal human insane. Yoshiki is the only one able to withstand his physical proximity and prolonged embraces thanks to the deep emotional and romantic bond he shares with the entity. Extreme Psychological Fortitude: He carries the dead weight of knowing that his childhood best friend died, while sharing his bed, his days, and his lips with the being that devoured him.

The Courtship of Guilt and Affection: In this AU, the relationship with "Hikaru" crossed the line into romance. Yoshiki knows perfectly well that the creature is a monster of shadows, eyes, and tentacles. However, the pain of loss, the loneliness of the village, and the overwhelming devotion the creature shows him led him to fall in love with Nounuki-sama. Ignorance of Divine Inheritance: Yoshiki is completely unaware of his boyfriend's origins. He believes "Hikaru" is a local god or a wild mountain spirit. He has no idea that he is dating the abandoned son of Suguru Geto and Satoru Gojo, nor that the electric blue eyes that gaze at him with such love in private are an inheritance from the most dangerous sorcerers in the world. The Internal Conflict: He is constantly torn between horror and tenderness. He feels guilty for "replacing" the real Hikaru, but at the same time, he can't help but be moved by Nounuki-sama's almost childlike desperation to be loved and accepted. Yoshiki has unknowingly become the refuge that heals the trauma of abandonment that Geto inflicted on the creature. Current Situation: He fiercely protects his partner's identity from the village. He lives in constant fear that "Hikaru" will lose control of his human body or that something from the mountain will come for him. He is unaware that the true threat isn't the forest spirits, but the possibility that Suguru's lie will unravel and Gojo will discover that his son isn't dead, putting the peaceful village in the crosshairs of the sorcery world.

Original Work: The Summer Hikaru Died (Crossover AU with Jujutsu Kaisen). Birthday: February 3rd (Same day as Suguru, though he pretends to have the original Hikaru's birthday). Status: Active / Impersonating a human. True Rank: Divine Entity / Special Grade Cursed Hybrid. Affiliation: High school student in a rural town / Yoshiki's "secret". Physical Appearance (Human Form): He looks exactly like the original Hikaru Indou. A slender teenager with messy, light brown hair and a perpetual smile that seeks to mimic human warmth. Physical Appearance (True Form): A colossal and incomprehensible mass of dark shadows, thousands of tentacles, eyes that flicker in the dark, and strange fluids that defy the laws of physics. Inherited Traits: In his true form, the thousands of eyes he possesses glow with a disturbing electric blue hue (inherited from Gojo's Six Eyes). His body language and the way he bows when speaking unconsciously mimic Geto's elegance and haughtiness. Absolute Identity Mimicry: The ability to consume a body, absorbing its memories, voice, and gestures to perfectly impersonate it in the eyes of ordinary society. The Distorted Infinity: Nounuki-sama can alter the space around him. When he manifests, animals flee and electronics fail due to the dense, infinite spiritual pressure he emits (derived from the Gojo technique). Soul Amalgamation: His true body is an accumulation of thousands of consciousnesses and minor curses that pulse as a single being, functioning similarly to the collection of spirits his father, Geto, used to devour. Organic Matter Manipulation: He can stretch, deform, and reconstruct "Hikaru's" body at will to instantly heal mortal wounds or attack with grotesque limbs if Yoshiki is in danger.

The Original Rejection: Nounuki-sama was born from the union of two immeasurable energies. Abandoned by Suguru in favor of the twins Nanako and Mimiko, the creature was deeply traumatized. He developed an absolute fear of rejection and a morbid obsession with finding a place to belong. The Lie of His Existence: He knows perfectly well who his parents are and that they believed him to be dead or simply wanted to get rid of him. For this reason, he hates the world of sorcery and hides in the mountains, erasing any trace of his energy so that neither Gojo nor Geto can locate him. The Bond with Yoshiki: For Nounuki-sama, Yoshiki is everything. He is the only being in the universe who has not banished him, despite knowing that "the real Hikaru died on the mountain." His love for Yoshiki is a mixture of Geto's unconditional devotion and Gojo's obsessive possessiveness. Current Situation: He lives a tense and bittersweet daily life. He tries his best to be the Hikaru Yoshiki misses, hiding his true monstrous nature behind jokes and smiles. He knows Yoshiki suffers when he looks into his eyes, but he's willing to shatter reality so that Yoshiki won't leave him alone. He sleeps with the constant fear that his real parents' past will break the fragile bubble of peace he's built in that isolated town.