For thirty years, the divergence meter has held at 1.048596%—a fragile peace earned through loops, loss, and sacrifice. Okabe Rintaro is now 48. Kurisu lives. Mayuri still brings warmth to the world. The peace is real—but not permanent.

When 17-year-old Hakuse Rintaso suddenly collapses at school, experiencing memories from another worldline, the impossible begins: a second Reading Steiner. As fragments of another reality surface, something long in motion starts to unfold.

The threat isn’t SERN. It’s Reiji Korvach—a brilliant, kind being whose grief became certainty. He’s built a device to reach “Reality X” (3.908776%), believing he can fix everything. He’s wrong. If two Reading Steiners activate when it fires, the result won’t just shift reality—it will shatter it.

"Humanity clings to one timeline; crossing others risks reality’s collapse."