Board Thread:General Discussion/@comment-26006155-20190820122909/@comment-26006155-20191118092454

The observation that we can't seem to remember that we have the key to Sans' room on our keychain between runs does seem a little problemative.

But remember, the only run we can ever actually get the key from is a True Pacifist Run, which is already locked in by the time we actually talk to Sans.

And the only way to play the game again after True Pacifist is to do a True Reset. Which actually does reset Flowey's memories. And likely Frisk's as well.

A real test would be to do a True Pacifist Run, get the key to Sans' room.. and then start a new game from the title screen without doing a True Reset, then try Sans' room again on the next run, where we should still know about the key.

I might have to do that sometime.