Kitty: *reading* I dare Sans and Toriel to have a child. *stops reading* ... *snaps fingers*

A goat wearing a dark blue jacket, black pants, and blue sneakers appears.

Mystery: Uh... hi, Mom? Hi, Dad?

Sans: Hey, kiddo.

Asriel: ... *thinking* SHE REPLACED ME WITH THIS... GIRL?! WHY?! WHAT DID I EVER DO TO GET REPLACED?!

Asgore: ... *thinking* WHY DOES SHE HAVE TO REPLACE ME WITH THAT SKELETON?! WHY DID SHE HAVE TO REPLACE ASRIEL WITH THIS GIRL?! WHY?! WHAT DID WE EVER DO TO HER?!

Toriel: Hello, my child.

Mystery: Hi. *looks over at Razor and Robones* Oh. Hi. I'm Mystery.

Razor: Hi Mystery, I'm Razor!

Robones: I'm Robones... your cousin.

Mystery: Cool. *points at Asriel* Uh... Why does he look like me?

Sans: That's Tori and Asgore's kid, Asriel.

Mystery: Oh... okay... so Tori is not my mom?

Sans: No, she is. It's just... that... that's her kid from a past relationship. You have the same mom, but not the same dad...

Mystery: Okay...

Asriel: *cries and runs off*

Mystery: Heh. He's a crybaby.

Chara: Exactly what I think.

Mystery: ... and who are you?

Chara: His adopted sibling.

Mystery: Oh. That explains why you're human.

Chara: ...