[ But they look like jewellery!' Oh, okay, that gets a wide-eyed face from Robby, but at least he points it downwards like he's inspecting the case. It's alright, he's not going to laugh, okay. But is he going to tell someone about this one day? Yes.

For now: ] Go for it. They're plastic. Just poke your finger there...

[ He's directing her how to take the disk out from its case, pressing the piece in the middle of the disk to make it pop out. At least Robby has a good memory of how DVDs feel: like thin plastic, with a shine to them, and even what would happen if one were to tap a fingernail against the surface.

If Chizuru would dare to, of course. ]

The bottom side, without the picture, [ since Chizuru likely doesn't know what the 'bottom' of a disk is, ] that's where the movie's stored. You put it in a machine and it reads that side to make the disk work.

[ A very simplified version of how disks work. ...and about as much as Robby knows himself, really. ]