The existence of Episode 23β frequently confuses newcomers trying to map out the narrative flow. Because Steins;Gate 0 is technically a mid-quel rather than a traditional sequel, viewing the franchise in chronological order requires a specific detour.
[ Episode 22: Alpha Timeline Decoupled ] │ ▼ ┌──────────────────────────────────────────┐ │ Episode 23: The Temporal Forking Point │ └─────────────────────┬────────────────────┘ │ ┌─────────────────────┴─────────────────────┐ ▼ ▼ [ 23a: "Open the Steins Gate" ] [ 23β: "Divide by Zero" ] Okabe is slapped by Mayuri. Mayuri comforts a broken Okabe. He tries again & saves Kurisu. He gives up on saving Kurisu. │ │ ▼ ▼ [ TRUE ENDING ] [ STEINS;GATE 0 ] Steins Gate Worldline Reached The Despair-Ridden Beta Timeline The Catalyst: The Slap That Changed Two Worlds
For casual viewers, the placement of Divide By Zero can be confusing, but its structural importance cannot be overstated. It transforms Steins;Gate from a linear story about escaping fate into a grand cosmic loop. Original Episode 23 Episode 23β (Divide By Zero) Slaps Okabe to motivate him Embraces Okabe to comfort him Okabe's Resolve Revives "Hououin Kyouma" Abandons the "Mad Scientist" persona Kurisu's Fate Saved via a clever ruse Left dead in the Radio Kaikan building Narrative Path Leads to Episode 24 (Happy Ending) Leads to Steins;Gate 0 (Wartime Timeline)
In the Missing Link and movie continuity, the dynamic between Okabe and Kurisu shifts. Kurisu, the "Mother of Time Machines," becomes the observer.
Okabe stood. His knees nearly buckled. “You can’t. This worldline—it’s unstable. It’ll collapse.”