Minamoto no Raikō

Minamoto no Raikō (皆本のライコ) is the Ancestor of Raimei and Raikō and the Elder Brother of Minamoto no Raimei.

Appearance
Raikou previously had naturally dark blonde hair color (like his sister), but seemingly dyed it later on to his current salmon pink hair color.

Early Life
When Raikō was fifteen, mutany within his family broke out against his mother, the leader of the Shinto Clan. His uncle Iroi Shinto disagreed with her ways, and wanted to take an active role in both worlds, the world of normal people and the hidden one of ninja's that existed within it. He wanted to use their ninja abilities to actively help people; while Raikō's mother thought that they should stay in the middle, and only intervene to help keep a natural balance. 4,000 years ago, the leader of the Echidna tribe, Pachacamac, attempted to steal the Emeralds for use against his enemies. Tikal, his daughter, resented this idea, worrying that it would upset Chaos and it would bring wrath to them, but Pachacamac did not want to hear it. His warriors stormed the shrine, where the Emeralds reside. Raikou's Mother gets killed saving her Son. Raiko, in a fit of rage, absorbed the negative power of the seven Chaos Emeralds. As a result, Chaos, enraged by seeing his friends hurt, transformed into a terrifying monster which killed all of them and Chaos avenged Raikou's Mother and his Clan. The only other surviving member of the Shinto family after this incident is Raikou's sister, Raimei, who was only ten at the time. Awoken from sleep, Raimei stumbled upon a destroyed building and the family members survived the attack, and only Raikou standing alive with his sword. Raikou then tells Raimei that he will on a Long journey. Upon his departure the seal separating the demon and human worlds was broken. Kyoto was all but leveled and a wave of demons appeared. Raikou was almost killed by the flood of darkness, but a princess banished to the netherworld saved him and held him in a state between life and death. The princess gave him a new body in exchange for his services. She would allow him to repent for his sins as an assassin by saving the world from the demons unleashed upon it. Raikoh begins his quest to restore the seal and stop the one responsible for its collapse.

Jurassic Orochi Chase
Raikou works as a punisher, with his partner, Gau, a boy whom he rescued from death three years ago. Upon his victims, Raikou places spider lilies with the intent of luring Raimei to a field of spider lilies so that he could confront his younger sister later on. He chooses not to tell Raimei his motives behind the massacre to protect her innocence. This leads to a battle between the two, as Raimei finds it her job, as part of the Shimizu clan, to deliver judgement. In her eyes Raikou has soiled the Shimizu family name. She finds Raikou near where the Shimizu house once stood, the place where the red Spider Lillies grow. During this battle, Raikou cuts deep into Raimei and leaves her bleeding, and incapacitated in the rain, where he then leaves with her sword, Kuro no Tsurugi. Later, he confides in his partner, and only real friend, Gau, after he is asked about his past. He tells Gau the whole truth, but makes him swear to secrecy, and makes it clear that there will have to be punishment if he doesn't keep his promise.