He looks at it curiously and then gestures to suggest he's not hungry right now. Says a few words in his own language, inquisitively, perhaps asking if she understands anything he's saying.

She shakes her head.

He raises an eyebrow – a blue eyebrow – and then points at the book, says, "Book," and nods, questioningly.

"Book!" she agrees.

Then he points at the table, says, "Book," and shakes his head. Also questioningly.

"Not book," she shakes her head. "Table," she nods. 

He nods, says a word in his own language, then shakes his head and says a word. Presumably yes and no.

Neat! She repeats them. <yes? no?>

They are correct!

He pauses, then seems to hesitate slightly, then points to his upper arms, shoulders, ears, eyes and hair. Then tilts his head, looking at her.

She says the words for those things, in order.

He points at his blue hair. Then at her not-blue hair. Then his eyes and her eyes – which are similar, actually, his are within human variation, blue irises – and then at his ears, which are rounded like hers, and then at his upper arm. Which again looks like regular human skin.

Then he points at her, questioningly.

"Your blue hair." Point. "My blonde hair." Point.  "Your blue eyes." Point.  "My blue eyes."

"Ear. Arm."

He pauses. "Luna, Rhuna, Thamar?"

He doesn't seem like he expects to get much out of the question.

She just looks confused. Are those names? Countries?

Itaruko, unfortunately, has no way to answer her unspoken question. Instead, he shrugs and looks at the common-word book. Then the pen. Flips open the back page and writes something down.

He says something and holds the book out to her.

Hmm. She points to the word in the book. <yes?> <no?>

He pauses briefly, takes the book from her, writes two more words and then hands it back to her, repeating the first phrase and then saying the words for 'yes' and 'no'.

The list now reads: "Test sentence. Yes. No." Quite comprehensibly.

That was either a remarkable guess, or ...

Where are you from? she writes. 

He tilts his head at it, frowning. After getting the pen back from her, he writes: Originally, Eiro, in Serenta.

How did you get here?

… I was in my bedroom and I think I fell into my mirror.

Train platform window.

Then, smaller: We should try to conserve paper. 

I can try learning your language?

He also writes in smaller text. It's rather neat handwriting for how small it is, but that could be the weird pen.

Can you read the words listed -- 

she points to the list of commonly used words.

He looks at the first page and shakes his head, but flips through the others to make sure.

Turns out there are a few more words, starting on the next page after where the previous list ended. It's common words in his language, and he frowns at them and then tells her as such.