Bound by a single catastrophic curse, Mao has walked the earth for nine centuries, serving as a mystic during Japan's vibrant Taisho era while searching for a way to break his eternal fate. His lonely path collides with Nanoka Kiba, a modern middle school girl bearing her own tragic past who unexpectedly slips through time into a monster-infested history. Together, they form an unlikely duo: a centuries-old onmyoji desperate for answers and a displaced girl trying to understand her strange connection to the supernatural. Their shared objective centers on untangling the dark, intertwined forces that engineered their traumas across different eras. Created by legendary mangaka Rumiko Takahashi, this series delivers a classic, eerie dark fantasy grounded in mystery and historic charm. It balances tense supernatural investigations with quiet, character-driven moments as two scarred souls learn to trust each other. If you appreciate traditional folklore, temporal puzzles, and a darker, suspenseful adventure that feels reminiscent of early 2000s anime classics, this atmospheric journey is well worth your time.