Originally Posted by XDrakeX

Aster is calling the commander "brother". Since you play the DMM version can you tell me what she is using: onii-chan, nii-san, aniki...?

Well I went through a bunch of her recorded lines and she always addresses you as "Danchou" (Knight Commander in Nutaku version). She does not address you as "brother" in her lines.
If you are talking about the lines in the current event, alas in the DMM version I have no idea, since the text is written in JPN which I do not speak.