Raikō Shimiza

Raiko is a 20-year-old samurai of the Shimizu clan. His sword is the white gamon or Shirogamon (白我聞), the partner to his sister Raimei's sword, Kurogamon.

Appearence
Raiko resembles to Raikō.

Incident
When Raikou was fifteen, mutany within his family broke out against his mother, the leader of the Shimizu clan. His uncle Iroku 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 Raikou's mother thought that they should stay in the middle, and only intervene to help keep a natural balance. Iroku confronted Raikou's mother telling her to step down as the head of the family, but killed her and Raikou's father in a rage when she declined. Raikou had originally agreed with his uncle because of an incident when a friend of his was in trouble and died because his mother forbade him from helping her, but upon the murder of his parents, he took up his sword and used it in punishment; murdering Iroku for his crimes. This lead Raikou's killing of the majority of the Shimiza Clan as well; anyone who was not already dead from another family member's hands. The only other surviving member of the Shimizu family after this incident is Raikou's sister, Raimei Shimiza, who was only ten at the time. Awoken from sleep, Raimei stumbled upon a burning and bloody building, a room full of her dead family members, and only Raikou standing alive with his sword. He took full responsibility for the deaths of everyone so Raimei would not have to bear the burden and could remember her family as good people; especially their uncle. Raikou then tells Raimei that he is going to go join the Black Serpents. Believing that he killed their entire family in cold blood, a hatred for Raikou quickly grows in Raimei, making it easier for him to leave.

Izumo Arc
Raikou works as a punisher, cutting down those who betray the Black Serpents in the Wakachi with his partner, Gau Tamatari, 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, Paul Gekko steps in saying En Garde you despicable snake. thus Raikou cuts both deep into Raimei and Paul and leaves her bleeding, and incapacitated in the rain, where he then leaves with her sword, Kurogamon. 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. However, Gau is deeply moved by the story and believes that Raikou and Raime should be brother and sister, not enemies. Tracking Raimei down, Gau tells her what happened 5 years before, holding a kunai to his throat and betting his life that it's true. Later, after she gets out of the hospital, Raimei goes forward to meet Raikou for a rematch. In the field of Spider Lillies, Raikou gives Kurogamon back, but quickly disarms Raimei anyway. Upset, Raimei lands a punch on Raikou, yelling at him for thinking her to be so weak and taking on the burden alone. Crying, she asks him to come home. He said that Paul Gekko was the one who let me go home with raimei. Raiko protects Paul Gekko and his sister causing the Black Vipers to have him to be carefree.