Yoko, a determined and curious teenager residing in an urban apartment, embarks on a perilous investigation after her indoor cat, Yuki, vanishes without warning. Her search leads her to a derelict building riddled with reality-bending phenomena—levitating debris, distorted shadows, and gravity-defying pockets—which she navigates first with unease, then growing boldness. Pale-skinned with piercing green eyes accentuated by dark underliner, she sports shoulder-length hair dyed orange and aquamarine, a vivid orange star tattoo on her left cheek, and practical exploration attire: a white sleeveless crop top adorned with a yellow star, black compression shorts, and red sneakers.

Inside the unstable structure, Yoko confronts surreal encounters—a stray dog shrouded in oily darkness, rain cascading under cloudless skies, and windblown newspapers crackling with static electricity. Initially agitated, she adapts swiftly, embracing exhilaration upon discovering a zero-gravity zone where she performs aerial flips. Neighborhood children join her, transforming the anomalies into tools for playful experimentation, revealing her mischievous, collaborative streak.

The fleeting joy of reuniting with Yuki in a crumbling courtyard shatters when armored "Exterminators" storm the site, evacuating the group and demolishing the building. Yoko defiantly protests, insisting the anomalies posed no threat and fostered creativity, but is overpowered. Days later, she finds only an ordinary parking lot where the building once stood—until a dented metallic can rolls inexplicably toward the empty space. Testing the site’s lingering strangeness, she slices her palm on the can’s edge, letting blood drip onto the asphalt. Whether it stains normally or defies physics remains uncertain. Though doubting her memories, Yoko’s outlook irrevocably shifts, merging wary skepticism with an enduring hunger for hidden truths.