Board Thread:General Discussion/@comment-26006155-20190820122909/@comment-26006155-20191118195528

Alright, meeting Sans and getting the key requires you to not kill anyone, and not go into the True Lab.

So I don't have an explaintion for why we can't immediately enter Sans' room again on a new playthrough. It does seem like he must give us the key at the time.

But why make a point of the key "already being on our keychain" when Sans could just give it to us? "It's time you learned the truth.." But what truth do we learn from visiting Sans' room?

Unless Sans is reminding us that we are him? An earlier version of him that lost his memory?

We walk into the lab behind his house, and find several momentos, and a note to "Never Forget."

We're supposed to remember something, when we look at these momentos.