Plunged into the depths of despair, Haryuu Ryoushi finds himself compelled by dire circumstances to a hidden underground research facility. There, he encounters Kosakai Mio, his childhood friend thought dead for nearly a decade. As fragments of a forgotten summer surge through his memory, Ryoushi is thrust into a bewildering puzzle.

The uncanny revival of a long-lost friend, the unsettling bend of time, and a sequence of chilling murders within this isolated enclave... Ryoushi is forced to navigate through this maze of mysteries, seeking clues that might unravel his twisted fate.

Confined spaces and impenetrable locks, a chain of unexplained deaths; the bending of space-time, quantum entanglements, and experiments that challenge reality itself. Prepare for the science fiction mystery you've been longing for.

[From Steam]