A surgeon discovers his patient isn't sick, she's a messenger from another era warning him the demons are already here. He doesn't get to refuse. Time travel becomes the only operating table that matters. This OVA trades coherence for pure visceral momentum, throwing you into a war across centuries without waiting for you to understand the rules. The premise is audacious enough that even when the plot frays, you're too committed to the chaos to care. It's 1991 excess unfiltered: a one-shot that swings for the fences and doesn't blink when it misses.
A surgeon named Ukyo Rettsu encounters an impossible patient: an elderly woman harboring something far stranger than any medical condition. What appears to be a grotesque tumor becomes a terrifying revelation when it awakens as a messenger from Japan's forgotten past, warning of an imminent demonic catastrophe that threatens all existence. Caught between his duty as a healer and the weight of humanity's survival, Ukyo must abandon everything familiar. Armed with barely understood psychic abilities and warrior instincts he didn't know he possessed, he journeys backward through time itself to confront an ancient race of demons preparing their invasion of the modern world. What unfolds is a collision between scientific rationality and supernatural terror, between one man's personal crisis and mythological forces beyond comprehension. The OVA blends visceral action with body horror and time-bending mythology, creating something that feels dangerous and unpredictable. Viewers drawn to weird, high-concept action that refuses to play by conventional rules will find themselves captivated by this story's willingness to commit fully to its outrageous premise.