In vol. 11, Eiji asks Ash about his real name while they are on the Staten Island ferry. Ash claims that his first name, Aslan, is a Hebrew word referring to daybreak.
Eiji: Remember what you told me once? That your mother gave you your name — your real name, "Aslan". It's not a common name … What does it mean?
Ash: It's an ancient Hebrew word that was used in prayer. It means "daybreak," cuz I was born at dawn.
But as far as I can tell, the Hebrew word for dawn is שחר (shachar). I tried guessing various Hebrew spellings that could be read as Aslan and looking those up on the internet, but I haven't yet found anything convincing. Aslan also happens to be a variant of a real Turkic name that means "lion," so Ash's etymology could also be the result of author error. I am not proficient in Hebrew or Aramaic, however, so I'm not sure if I'm missing something. Is there any truth to Ash's claim at all?