Someone please help me decipher the intent with Anya's bubble. I read it as アルン★ and can't determine what it's supposed to be in English (if it's even supposed to be English at all).

P.S. Engrish is funny. XD

I believe it says 'Ahan'.

Of course, you're right. Shall I just go with "aha" as the English, then?

ıt's from code geass sound episode isn't it ? :D

That is correct.