[The double smiles again and for a minute it almost looks genuine...if one didn't look to hard. And Sans was all about looking too hard at things he shouldn't. Maybe if he hadn't spent his time absorbed in wondering when the next Reset was going to happen then he would have caught on sooner.

But then again, maybe not.

It's just an "If".]

Then I hope you find what you can call a happy ending. As for me...I have things to do and people to meet. If I see you in the near future, I'll be sure to say hello again.

[One way or another, Sans will have to greet whatever future happens. The 'good' Chara, the bad or worse one. That much is certain.

They turn to walk away, their body crumpling back into that hunched over form that once walked out of the Ruins, covered in dust.]