Raiko stands among Yamato's Eight Pillar Generals, renowned for a coldly calculating approach to warfare and governance. He elevates strategic outcomes above ethical concerns, evidenced by brainwashing a tactician for continued effectiveness and destroying the Bridge of Inava for military advantage. Despite this ruthlessness, he conceals profound despair and harbors genuine concern for Yamato's people. He perceived the Mikado's protective love as stifling, viewing the ruler's removal as a chance for the populace to forge independence. His strategic brilliance defines the Yamatan Civil War erupting after the Mikado vanishes. Raiko consolidates a powerful faction, seizes the Imperial Capital, and administers it efficiently. He confronts Haku, who impersonates the deceased general Oshtor. Raiko's propaganda campaign brands Haku's actions "The Atrocity at Ennakamuy," tarnishing Haku's standing with neutral nations. Their conflict intensifies when Haku deceives Raiko with a forged letter hinting at Tuskur reinforcements, provoking an early confrontation. Raiko suspects trickery but cannot disregard the potential threat, resulting in his decisive defeat. In his final battle, Raiko dons the First Akuruka, violating his own principles to honor the wish of his devoted squire, Shichirya. This act also serves to test Haku and Princess Anju's capacity to lead Yamato toward true independence. His defeat culminates in his acceptance of death, symbolizing his commitment to Yamato's future even in failure. After defeat, Raiko appears in the spin-off *Lost Frag*, transported to another realm during his fall. Rescued by villagers, he remains in their rural settlement, advising on its development and earning the title "Saint of Salvation." He aids in defending against bandits alongside Akuta, Ukon, and Mikazuchi but declines recruitment, choosing to stay with the villagers. Encountering Marebito versions of Honoka and Shichirya prompts him to seek a way back to his world, learning the method from Luna and Mito. Knowing it leads to his demise, he resolves to return and face his chosen path. Raiko shares intricate familial bonds. He maintains a harsh yet secretly proud relationship with his younger brother Mikazuchi, occasionally engaging in sibling banter. He carries deep guilt over his sister Mirai's death, exploited by Narakfala's illusions, though this remorse never weakens his resolve. Shichirya remains his steadfast squire, while Oshtor (later impersonated by Haku) previously served under him in the capital. His combat prowess includes mastery of the Flow of Nine, enabling simultaneous control of multiple Shiki, and lethal proficiency with an iron fan (Tessen) in battle. These skills, combined with his strategic intellect, cement his reputation as a formidable adversary.