[MeisterBabylon]

This has got to the singlemost epic episode of this season, and there's tough competition unlike the other seasons! Man, I still can't stop tearing up when I recall those sweet painful moments...

Anyway, Kurisu was clearly saying she was in the Alpha worldline too, meaning that what Okarin saw may well be Kurisu, but only nearly dead and was later revived by medical means. I believe this somehow ties into WW3, so by rescuing Kurisu from SERN will they jump into a new timeline where SERN is just CERN.

In the noble brightness of this alternate future, there is only GOOD END.

Note: this is only speculation and I swear I have never touched the game. Any similarities are purely coincidental.