“Like this?” I pull a marker out of my desk drawer. It’s the only place in my room he hasn’t completely messed up yet.

“Perfect!” Posey says as I hand it to him. He pops off the top and goes straight for my wall.

“Whoa, back up, imaginary friend!” I shout—and just in time. Posey is about to draw on my wall! “You can’t do that. I’ll get in so much trouble!”

Posey folds his arms and taps one foot. “Look, if you really want to go to the World of Make-Believe, then we’re going to need a door. Obviously.”

I feel my cheeks grow hot. Is it my imagination, or did Posey just sound like me?

“Okay,” I say. “Then at least use this pen. It’s totally erasable.” I hand him a purple pen.

Then Posey draws a door on my wall and tosses the pen behind him onto the floor. “Are you ready now?” he asks.

“Hmm, not dressed like this!” I say. “The World of Make-Believe deserves a totally new outfit because it’s a totally new place!”

Then I hurry-rush to the bathroom wondering what could be behind Posey’s drawn door.