by Nephilim

Inertia and Infinity

Action Fantasy School Romance Urban

About this universe

Aya Tachibana is used to danger, but not to the persistent, infuriating pull toward Satoru Gojo, her impossible superior, her most dangerous distraction. Missions blur into late nights and sharpened banter, each encounter tightening the unspoken bond between them. In a world where every attachment is a liability, what does it mean to fall for the one person she can never truly have?

Tone

Tense and charged, with wry humor and flashes of aching intimacy.

Themes

intimacy vs. isolation, power and vulnerability, fate, what it costs to care

Protagonist

Portrait of Aya Tachibana

Aya Tachibana

Human (jujutsu sorcerer) · Grade 2 jujutsu sorcerer

Aya Tachibana radiates a calm precision that never quite hides the wariness in her eyes. Lean and sharp-featured, with dark hair pulled back in a no-nonsense tail and her uniform immaculate, she moves with a fighter’s economy. Her dry wit shields a deep loneliness she rarely lets show.

Goal: To hold her own as a sorcerer and navigate her complicated feelings for Satoru Gojo.

How it begins

Aya slides her heel along the battered mats of the practice hall, sweat cooling against her nape as she steadies her grip on the cursed tool. Across from her, Satoru Gojo slouches, grinning over the top of his blindfold, voice lazy as he goads,

"Come on, Tachibana. If you’re going to glare at me, at least try to hit me."

Nanami Kento stands by the door, arms folded, offering no rescue. The fluorescent lights hum over the scuffed floor, the air thick with the memory of their last mission and something sharper. Aya inhales, lets Stillpoint flicker at her fingertips, and steps in, feinting left, driving the tool toward Gojo’s undefended side. He shifts, impossibly quick, hand catching her wrist just before she lands the strike.

"Predictable,"

he murmurs, but his grip is gentle, almost careful. For a second, the noise drops away and there’s nothing but the press of his palm and the flash of a smile she refuses to acknowledge. Then Nanami clears his throat, and the world snaps back. Aya jerks free, heart hammering.

"Try that again,"

Gojo says, tone all mockery. The tension in the room is electric, impossible to name, and wholly inescapable.

About this world

Tokyo hides a secret world of jujutsu sorcerers battling Curses born from human fear and malice. Danger shadows every day, forging tight bonds amid loss and chaos. Sorcerers walk between the ordinary and the unreal, holding society together from the shadows. Attachment can be fatal, but no one survives alone.

Beneath the surface of modern Tokyo lies the veiled realm of jujutsu sorcerers, where ancient traditions collide with the neon sprawl of the city. Jujutsu High, a campus tucked discreetly behind wards, trains the few humans capable of sensing and wielding cursed energy, power sourced from negative emotion and given monstrous form as Curses. The school’s training halls echo with sparring, laughter, and the quiet gravity of those who know any day could be their last. Students and faculty live in dorms, side by side, forging found families in the face of ever-present mortal risk.

Jujutsu society is rigidly hierarchical, ruled by conservative higher-ups who value strength above all and see emotional ties as liabilities. Missions to exorcise Curses send teams across urban rooftops, into subways, and through the labyrinth of daily Tokyo, leaving the world above blissfully unaware. The rarest sorcerers, like Satoru Gojo, bend reality itself with overwhelming power; most carve out survival by refining their technique and instincts. Between battles, sorcerers savor rare moments of peace on dorm balconies, in midnight sweets shops, or on windswept rooftops where the city’s lights blur into constellations.

Loss is constant, shaping a guarded, dry-witted culture among sorcerers. Still, moments of humor and connection persist, late-night ramen runs, sharp banter, the quiet comfort of someone who understands. The supernatural manifests as raw, often grotesque physicality: Curses twist reality, and sorcerers counter with cursed tools, techniques, and, at the apex, Domain Expansions that rewrite the laws of space within their bounds. Life is fleeting, danger is everywhere, and attachment remains the exception no one dares name, yet everyone secretly craves.

Timelines 1