Sora was always made fun of as a girl because of her appearance, however, she never let it get to her and eventually she kept challenging strong warrior men to duels and defeating them all, commanding respect from everyone. Even from being classified as a giant who are not the brightest species, Sora has studied and learned many different forms of combat magic, but magic nonetheless. This is a sign of higher levels of intelligence. She dreams of finding her ancestors the true giants who were lost somewhere in the universe when they got swallowed by a black hole, which we later find out was a Void Scar.
