Yae Sakura is RIN's older sister and is a member of the Thirteen Flame-chasers, ranking eighth and holding the Signet of "Setsuna". Typically, Yae Sakura is not a social person and prefers to work alone due to various reasons. Particularly, it is due to her distrust of her potential partners and their ability to fight, which she thinks will lower her battle efficiency. Despite that, Yae Sakura is responsible and disciplined, taking care to do her missions properly and keep up with her training.