Demon Warrior Koji

Working homicide cases that regular detectives can't crack — the kind involving something way beyond human — is how Koji, a man-demon, makes his living. When a series of brutal, inexplicable murders tears through the city, he teams up with Kyoko, a psychic with a deeply unsettling connection to death, and together they start pulling at a thread that leads somewhere genuinely dark. Their trail eventually converges on a lone woman, and what surrounds her is the kind of thing that makes you question whether solving the case is even survivable. The tone here is heavy horror with supernatural muscle — think less detective procedural, more descent into something wrong. It's a 3-episode OVA from 1999, so it moves fast and doesn't waste time on setup. If you've seen Urotsukidoji: Legend of the Overfiend or Demon Beast Invasion, you already know the creator's signature — graphic, unsettling, and genuinely committed to its horror premise rather than using it as window dressing. La Blue Girl fans will also recognize the DNA. This isn't comfort viewing. It's grimy late-night stuff with a legitimate monster-hunting plot underneath the darkness. The Koji-and-Kyoko dynamic actually works as an anchor — two people with abnormal abilities navigating something neither fully understands yet. If that sounds like your thing, the short runtime makes it an easy commitment.