Aono Morimiya

Aono is Yorito039s older sister who has been sickly ever since she was born and is hospitalized at the beginning of the story. She has a cold personality showing very little emotion but still is visibly annoyed at Yorito for how much he seems to ignore her to do other things. Every time Yorito brings her a new doll she takes one look at it and throws it in a nearby basket filled with other dolls. However she does not hate them and even has one which is her favorite mdash the first one Yorito brought her. She enjoys origami and is friends with Koyori. Source: Wikipedia