During a fateful encounter, Fujima Yamato narrowly escapes a serial killer only to be rescued by the enigmatic transfer student Shinonome Shizuma and his mysterious powers. As they find themselves at Yamato's home, a quirky exchange unfolds, prompting Yamato to offer help to Shizuma. Despite initial rejection, Shizuma persists in his mission to stop the beast behind the gruesome murders, leading to unexpected twists in their intertwined destinies.