Synopsis
The city shifts as day dies out. Ujiro Hanegata walks along narrow streets, dusk dropping cold shadows behind each power pole. At seventeen, he tries to avoid trouble. He just wants to protect his younger sister, Mefu. Ever hear a story that starts gentle, but something doesn’t fit? That’s Ujiro’s life now. Dreams twist through his mind each night. In them, he’s battling shapes formed from glass, fire, ink, stone. He’s begun seeing those shapes on walls in real life—but nobody else notices.
His friend Nene Okibe spots something one day while waiting outside cram school. There’s a shimmer across the tiled alley. “Do you see it too? It’s like a spiderweb, but huge…and silver.” Ujiro nods. But only the two of them can grasp it. As they touch it, the world shakes. The city vanishes, replaced by a blue void, thin bridges spinning between bits of earth floating in open space.
Three figures stand on the bridge ahead. They’re hard to look at—cloaked, masked, strange-smelling. One steps close. “Why’d you enter this Threadspace, mortal? Watch your feet… or you’ll fall beneath dreams.” Name’s Sdaemi, a watcher. He says people with haunted hearts slip into Threadspace. Their hidden will gives them shape here. Ujiro’s hands burn; wings made of old newspaper peel off his skin. Nene starts humming, nervous, and envelops them both in a warm cloud of music—her own power sparking out.
Conflict bubbles fast. A girl in white flashes above the bridges, lashing threads at Ujiro. “Another stray?” She’s lean, angry, and throws out the ‘Arc’. This web is her space, and she’s defending it from intruders. Can Ujiro fight back—and more, does he want to? Who else has fallen from normal life into these tangled threads? How real is the risk here if it’s only a dream, anyway?
They dodge her attacks. Nene’s music isn’t strong enough to fend off such force. Sdaemi says only Ujiro—if he claims the Phantom Fabric—can take control in Threadspace. But to seize it means facing things they won’t admit to each other, even on quiet nights. Debris falls off bridges as enemies clash, each floating islet packed with symbols from memory. Ujiro wipes sweat from his brow and whispers, “Let’s work together for Mefu’s sake, and to get home. You’ve got my back, right?” “Always, and no matter where,” Nene says.
Halfway to the center of the Threadspace, new characters appear. One is Mefu, pulled into the world despite Ujiro’s care. The masked watchers all step forward, interest stirred. Mefu’s voice rings out: “Big brother! Don’t let go!'” 
This is the moment you start to wonder: if you pulled on the frayed edge of your own reality hard enough, what would be left? As bridges collapse and the girl in white drops her mask, revealed at the worst moment to be someone vital to Ujiro’s past, choices gather like storm clouds.
The last lines ring through fractured space. The Phantom Fabric pulses, and it’s within Ujiro’s reach. Nene calls, “Ujiro, everyone here is watching! Don’t make the same mistake!” Sdaemi laughs from beyond the light.
Right at the cliff’s edge, Ujiro leaps—and the world flickers white. What happens if he misses?
