You, as Coraline's adopted sibling, was dragged in the tiny door with her. But you managed to save the other Wybie with Coraline. Somehow. Eventually, you introduced Other Wybie to real Wybie.

You were in your room, reading, while the Other Wybie reads with you. You're adoptive parents said he was you're responsibility as if you adopted a dog. And who else was there? real Wybie.

Wybie: i didn't know you read fancy stuff.

Other Wybie: He looks at you, smiling and fascinated.