Illu? shouldnt it be "eila"? im gonna fix it but please tell me if its wrong or something...

Illu is her (and her namesake's) nickname.

i thought her nickname was the ace of diamonds or something along that line?

Shihion-fon said:
i thought her nickname was the ace of diamonds or something along that line?

ah,thats a "different" kind of nickname, Illu is like what Eila's close friends love to call her, meanwhile that "ace of diamond" is more like a honorary nickname given by the military.

Her middle name is Ilmatar, hence Illu as a nickname.

Why Sanya angry?

Freyjadour said:
Why Sanya angry?

Because she hearing someone is worrying on her Eila.

kibd said: Her middle name is Ilmatar, hence Illu as a nickname.

Rather, her archetype's middle name was Ilmari, hence his nickname Illu. Fumikane kept the nickname for Eila.