Kina Kodon

When Kina was an infant, his father, Tenma Kodon, attacked the Howling Wolf Village with the ancient monster, Rōen, in an attempt to convince the village to preserve its shinobi ways. He lost control of Rōen during the attack and Kina's mother died in an unsuccessful attempt to seal it back into the Kodon shrine it was historically imprisoned within. Tenma's only option to save the village was to seal it into his son. Tenma tried to seal it into Kina's older brother, Reishi, but Reishi's body was incompatible. Only Kina's body was. The seal was placed on the back of his head, so that as got older the seal would be hidden by his hair. The village was saved, but Tenma had died doing so. Although the villagers couldn't prove it, most suspected Tenma was behind the attack. For that reason, after the Howling Wolf officially disavowed its shinobi ways, the villagers started ostracising Reishi and Kina, blaming them for Tenma's actions. Kina, having never been told the truth by Reishi, believed their father was innocent and proudly wore his Anbu mask in his memory. Over the years, whenever the hardships of the Howling Wolf Village would become too great, Reishi would try to take Kina somewhere else so they could have a better life, but the seal compelled Kina not to stray too far from the Kodon's shrine. Resigning themselves to staying, they set up shop near the shrine 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 got older, his efforts to defend his father's honour 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 their father's mask 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.