Board Thread:General Discussion/@comment-26006155-20190617222636/@comment-32182236-20190728235556

Or, the link between essence and memory that I cited holds, and Gaster's essence was shattered across time and space, causing his memories to meet the same fate. It'd explain why some people remember pieces of him, and not others. Why Asgore knew how brilliant Gaster was... Without actually remembering him.

And it's why Sans has that note saying "don't forget". Gaster and his memories are gone.. Meaning Sans now lives in a world where Gaster was not known to exist (he wasn't retconned-He still existed.. But his memories are corrupted.)

Remember, if Gaster was shattered across time and space, that can only mean his essence.

Why would Sans repeatedly kill Gaster? Why would he want everyone to forget him?