Set in a rapidly developing city plagued by an abnormally high number of disappearances, this mystery visual novel follows two intertwined tales of resolve and tragedy. Kurusu Yuuma searches desperately for his missing sister-figure, Akizuki Kaname, only to be drawn into a web of unexplained vanishings. Meanwhile, Takanashi Shin’ya delves into the same enigma in hopes of saving Akesaka Touka, a girl afflicted by a mysterious illness linked to the supernatural. Written by Kazuki Fumi, the story features a dual protagonist system, weaving together two perspectives that gradually uncover the dark secrets lurking beneath the city’s surface.