If you open the door to Yuri's mind (it says "Sixth Grade Wisteria Class"...er wait...you could have sworn it said "Wisteria" but actually it says "Alien" now).

There you will find a darkened classroom. The children are faceless black cutouts, from behindwhich tend to emerge tentacles and mandibles.

The teacher is a distorted and lumpen thing, looking like it belongs equally to some distant sun and the depths of our own seas (http://i37.tinypic.com/2ic3c7a.jpg).

In the center desk is Yuri, spotlighted.

They're all looking at her.

Even in her headscape, she's not comfortable.