Luna was born in a small village in Zefilia, the first daughter of merchants. Her father is an ex-mercenary and her mother is an ex-sorceress. Luna and Lina's relationship is not the most affectionate, to say the least. Apparently, when they were younger, Lina would misbehave and Luna would "punish" her by making her do grueling workouts. The most notorious incident between the two was when Lina, ever keen on an opportunity to make some extra cash, set up a device that projected an image of Luna while she was taking a bath. Luna's subsequent reaction afterward 'compelled' Lina to begin her quest. Lina is still terrified of Luna and even the mere mention of her 'sister' sends Lina into a panic attack.
wiki
