Beyond the Boundary - S01

<p>Mirai Kuriyama is the last surviving member of a clan of Spirit World warriors who can use their blood as weapons. Because of this, she is given the job of hunting down and killing "youmu," creatures that are said to be the physical form of negative human emotions. One day, while she is lost in thought on the school roof, Mirai runs into Akihito Kanbara, a rare half-youmu in human form. Panicking, she stabs her blood saber into him, only to find out that he is immortal. From then on, the two strike up an unexpected friendship built around Mirai constantly trying to kill Akihito, hoping it will restore her shaken confidence as a Spirit World warrior. Eventually, Akihito convinces her to join the Literary Club, where two other powerful Spirit World warriors, Hiroomi and Mitsuki Nase, are members.</p> <p>As the group's bond grows stronger, the youmu around them become more persistent. Their misadventures soon turn into a struggle to survive as the release of the most powerful youmu, Beyond the Boundary, draws near.</p>