selector stirred WIXOSS

From when she was a child, Sara Shirato has always been in the shadow of her younger sister Yura. Spoiled by doting parents and having a frail body early in life, Yura's grown into someone who always gets her way or else through manipulation and doe eyes. Deep inside, Sara and the rest of her friends at the Tabletop Games Club are sick of it. Recently, the school is abuzz with talk of mysterious WIXOSS cards that can grant wishes... if you win enough battles, that is. Sara has one. Can she keep it a secret from her friends? If she won, what would she wish for...?