A demon's arm falls from the trees. By the time you understand what that arm means, the film has already severed something inside you that doesn't grow back. Oni trades jump scares for the kind of horror that lives in blood relation and duty, where the real monstrosity isn't the thing in the forest, it's the choice waiting at home. This hits hardest if you've ever had to protect someone you love while knowing protection might destroy them both.
Two brothers hunt in the mountains with their mother, moving through dense forest to set traps for deer. When a demon's arm suddenly emerges from the canopy and seizes the younger boy, the older brother acts without hesitation. His arrow finds its mark, severing the creature's limb and saving his brother's life. Back home, they examine the severed arm, and horror creeps in as they recognize something impossible in its form. The truth waiting for them shatters everything they thought they knew about their family and their mother's past. This animated film draws from ancient Japanese folklore, transforming a simple hunting expedition into something far darker. The tone shifts from quiet tension to psychological dread as the brothers grapple with the implications of what they've discovered. Muted colors and sparse animation create an unsettling atmosphere that lingers long after the credits roll. This is a story for viewers who appreciate horror that works through implication rather than spectacle, where the real terror comes from understanding rather than gore.