Chapter 1

It's typical for Sans to have one nighters. He isn't a guy for commitment, always has been a little scared of that, afraid he'd settle into the wrong relationship. And that's fine. He's upfront about this, each and every time. People are fine with it. As long as Sans is happy.

One of these one nighters, though, left Sans with an extra... addition. He got pregnant.

And, afterwards, discovered he got pregnant with a kid of a serial killer.

Whoops.