[And then for the first time since starting the game proper, Light looks up to look at the young stranger. Going to disappear? That's a rather morbid thing for a fortune teller to say, unless it was just a ploy to get them to return at a later date, in hopes of finding out how to avoid this future.

Maybe this was the case. But there's something about the casual flippancy in how Shiki says this that cause Light a brief moment of uncommon hesitation.]

Disappear? [He echoes. Logic filters through his mind, as it's apt to do.] Do you think she meant it in a "grim" way? These sort of readings are left wide open and up for interpretation on purpose, you realize. Disappearing doesn't necessarily mean gone from the face of this earth.

[He places his white piece down, almost unthinkingly, though it is with purpose.]

Maybe she meant it as... you're going to experience turning point in your life.