Reishi Kodon

When Reishi was seven years old, he witnessed the attempted annexation of Howling Wolf Village's by Amegakure; despite being outnumbered and less skilled, the Howling Wolf's villagers were able to able to overwhelm the invaders using blue fire powder, an innovation so easy to use and so destructive that even a child could defeat a ninja with it. In the aftermath, the captured Ame prisoners were forced to walk into the mine field that had been set up to defend the Howling Wolf Village, detonating the mines and thus making the land safe for travel. The Howling Wolf's villagers laughed at the carnage of the Ame-nin's deaths. This left an impression on Reishi, convincing him ninja would someday become obsolete and that the world would be made worse for it. Because of the Howling Wolf's victory, the villagers decided that they didn't need to continue using ninja, due to being convinced that the blue fire powder could protect them. Reishi's father, Tenma Kodon, disagreed with this. To try and convince the villagers to change their minds, Tenma released the monster, Rōen, from its prison within the Kodon clan's shrine, expecting that he could control it. The village defended itself with blue fire powder, which was powerful enough to break his control. Tenma and Reishi's mother tried to seal Rōen back into the shrine, but his mother was killed before the seal could be completed. Because he couldn't seal it alone, Tenma's only option to save the village was to seal it into his son. He tried to seal it into Reishi, but Reishi's body was incompatible and the pain it caused him made him pass out. When Reishi regained consciousness, Tenma was dead, Rōen was gone, and his infant brother, Kina, had a seal on his head; his body had been compatible. Although the villagers couldn't prove it, most suspected Tenma was behind the attack. For that reason, after the Howling Wolf officially became neutral to all conflicts, the villagers started ostracising Reishi and Kina, blaming them for Tenma's actions. Reishi tried to take Kina somewhere else so they could have a better life, but the seal compelled him not to stray too far from the Kodon's shrine. They set up shop there and sold Kotarō, making just enough off its sales and the local wildlife to support themselves. The Sendō clan, primarily drug dealers, wanted the secrets to Kotarō and would harass Reishi and Kina to share how it was produced. Reishi tried to explain that there was no secret to share, but the Sendō didn't accept this and escalated their attacks. When Itachi Uchiha visited the shop he fought off the Sendō, but for most of the year they were on their own. Kina resented this treatment by the Sendō and the other villagers, as he alone believed in his father's innocence. As he got older, his efforts to defend his father's memory increasingly led him to get into fights that he would inevitably lose. Until one day, in his anger, Rōen momentarily broke free and killed Kina's attackers. Kina didn't know what happened, but he was deeply upset by what he'd done. To spare Kina the memory of the men he'd killed, Reishi used Kotarō to make him forget. He tried to discourage Kina from getting into fights, but Kina wouldn't listen and would inevitably kill someone again, at which time Reishi would once again wipe his memory. To help him keep track of Kina, Reishi started secretly coating the mask he carried around with a pheromone that would attract the local fireflies to him. In doing all of this, Reishi kept anyone from finding out what Kina was or what he was doing. But he knew somebody would find out eventually, and so began planning how, when that day came, he would protect Kina.