A half-ogre born with a sword for a hand hunts his own kind across feudal Japan, chasing the delusional hope that genocide will make him human. The OVA doesn't waste time on philosophy, it moves between villages and battlefields with the focused brutality of something made in 1994 that refuses to explain itself. Every swordfight is economical, every character encounter is a transaction, and the premise itself is the entire story. This is anime that trusts you to understand what it means to be a weapon pointed at your own bloodline. Four episodes. No filler. No redemption waiting at the end.

An ogre mother gives birth to a child who looks human and who comes into the world holding a sword rather than bearing a horn. He has no name of his own and goes only by the name of that blade, Onikirimaru, the Ogre Slayer. Though his form is human, he is entirely ogre. Convinced that he will become human once every ogre has vanished from the human world, he wanders Japan for decades, hunting down his own kind. Along this bloody road he sees countless human tragedies, knowing that he alone stands between the ogres and the ruin of humanity. The four-episode action OVA follows his grim, solitary crusade.