In this dark fantasy tale, we follow Akihito Kanbara, a high school sophomore who is not entirely human but a resilient half yōmu with rapid healing abilities. His encounter with the freshman Mirai Kuriyama, who possesses a rare gift of blood manipulation, changes his life. Mirai, shunned due to her extraordinary powers even among spiritual beings, catches Akihito's attention as he prevents her from a tragic leap off the school roof. This fateful meeting sets off a chain of unsettling events that test their intertwined destinies.