Black Torch is a Japanese manga series about Jiro Azuma, a young ninja who can communicate with animals. After a mission goes wrong, he is mortally wounded but survives by merging his body with a legendary monstrous cat spirit named Rago. This fusion grants him immense power but also forces him into a conflict against other demonic threats and a secret government organization. Readers enjoy the series for its fast-paced action, dark supernatural world, the partnership between Jiro and the cynical Rago, and its blend of ninja skills with monster-fighting battles.