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E-Run: Threshold Beat
Sixteen-year-old Haruka Yoshida didn’t come to America to stand out. As a Japanese exchange student, she’s just trying to keep her grades steady, her breathwork clean, and her voice from fraying during evening calls. Blending in is survival. Recognition is risk.
But when a mysterious augmented-reality “run” ignites inside an abandoned Target store—and the world starts reacting like it knows her count—Haruka is forced across a line she never meant to cross.
The walls listen. The rhythm tightens. And hesitation costs.
Now she’s leading a team she never asked for, inside a system that reacts to breath, cadence, and intent. The challenge isn’t about winning—it’s about timing. Because when the room starts responding to you… it wants to see how you break.
To survive the run, Haruka must do more than call clean.
She’ll have to become someone her old life never made space for—and trust people she only meant to stand beside, not lead.
Because every run ends one of two
You level up—or you break.
But when a mysterious augmented-reality “run” ignites inside an abandoned Target store—and the world starts reacting like it knows her count—Haruka is forced across a line she never meant to cross.
The walls listen. The rhythm tightens. And hesitation costs.
Now she’s leading a team she never asked for, inside a system that reacts to breath, cadence, and intent. The challenge isn’t about winning—it’s about timing. Because when the room starts responding to you… it wants to see how you break.
To survive the run, Haruka must do more than call clean.
She’ll have to become someone her old life never made space for—and trust people she only meant to stand beside, not lead.
Because every run ends one of two
You level up—or you break.
569 pages, Kindle Edition
Published November 26, 2025
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