Selector Stirred WIXOSS

Since she was a little child Sara Shirato always took care of her sick little sister Yura. But now that Sara wants to live her own life, Yura becomes more and more an obstacle to her. When Yura eventually even wants Sara to attend the same high school as her, Sara decides to make a wish: she tells her newly found LRIG Mihiro that she wants to be free from Yura.