Synopsis
The narrative unfolds in an aging Western-style hospital where Takumi is held. Following an accident, Takumi has developed unusual abilities: he can perceive the "deep voices" of past events tied to various locations within the hospital, and occasionally enters the consciousness of others while asleep. Alongside Amano Aki, he attempts to uncover the hospital's mysterious history. Meanwhile, a doctor named Yanagi Hiroko seeks to research Takumi's peculiar power.