[winkel]

I'll just ask the most obvious question:

Why won't Jinta just prove Menma's (ethereal) existence? Wouldn't that be the easiest way to solve everything? Have her bake those muffins right in front of everyone.

Spoiler:

I think the reason might be because we're going to be twisted at the end, and Jinta really was doing everything himself and Menma was a delusion all along.