Board Thread:General Discussion/@comment-26006155-20190820122909/@comment-26006155-20190930053129

I'm still pondering the exact whens and hows all of this works.

But Chara must have had knowledge of Frisk, and his adventures, before her death in the Alpha timeline, so that her essense would remember it for use in the Beta Timelines.

So in the Alpha Timeline, Frisk(Sans) met Chara.

And somehow, Frisk/Beta Sans's fate was crossed which Chara's when time was reset.