Ai's self-satisfied grin widened a tad, revealing straight (if kind of...brownie stained) teeth. Quickly she snatched the paper back, a snicker moving past her lips as she moved behind Yoshi. 

Ai held the paper up to the light, as though doing so would reveal anything - it didn't, and was purely for dramatic effect. [color=9e0b0f]"Look, look. It's not [i]that[/i] hard."[/color] She brought the paper closer to Yoshi's face (perhaps uncomfortably close...) and, pocketing her wallet, pointed towards the seemingly random letters scrawled across the paper.

[color=9e0b0f]"It's called a Caesar cipher. They're one of the easiest to learn, as long as you've got the alphabet memorized. They say that Julius Caesar himself devised this to encrypt military messages!"[/color] She pointed to the first letter, Z. [color=9e0b0f]"All you do is take the letter and go three back in the alphabet. But I encoded this [i]twice.[/i] So this Z would really be a W, and, decrypting again, that W would be a T. Neat, right?"[/color]

She seemed much more natural now, her voice uplifting slightly in enthusiasm. One could tell she knew quite a bit about this, and could (and would) go on for literal [i]hours[/i] about it. 

[hider=My Hider]
Location: Classroom 2-A, YHS
Interacting with: Watanabe Yoshi [@Pleek]
Inventory: Wallet (in pockets), Cipher Paper (in hands), House Keys (in pockets), cellphone (in pockets)
[/hider]