s01e20 — Finalize Apoptosis

@TorlopovSergei: the very first world line is the one where Kurisu dies (at the very beginning it was, in the very first episode). Actually, she remembered that, but Okabe didn't. It turns out that there are two choices: either Kurisu dies and CERN does not create a dystopia, or Mayuri and CERN make the world subservient to their organization

@aelirenna: Big deal, a man has risen. Who remembers about this at all

@Estelle69: he forgot about her murder and further resurrection almost immediately after the incident, as if it were some kind of unimportant phenomenon for the plot. Anyway, it's a strange thing to forget the death of someone important to you, even though you remember Moyuri's death. This twist is more like an attempt to hide the piano in plain sight, rather than memory problems as a result of endless transfers of consciousness.