Plays a very important role in the story. It is in the shape of silver threads that's attached to every person and every thing (person, plant, rock, etc.) that that person has ever interacted with.
- The Ji Clan has a special fishing rod that is capable of Karmic Annihilation, which destroys the karma threads and erases the person from existence. Everyone that knew him, or even anyone that was merely a passing acquaintance will lose their memories of the person who had his own karma severed by this technique.