丘野 ひなた

Makoto’s athletic younger sister. Being very active, she commonly follows her brother around or pulls pranks on him. She carries a pair of binoculars which she uses to spy on things, and is fascinated with the blimp that flies over the city each day. She is hyper, and when she gets hurt, angry or confused her favorite catch-phrase is, “Unyah~!” 
From url=http://en.wikipedia.org/wiki/Wind:_A_Breath_of_Heart

Is the real sister of Minamo and Wakaba./