Karen

Karen was a female practitioner of Nanto Hisui Ken and once studied under Shu as his young apprentice. Karen was a sweet girl who grew up with Rei and cared deeply for his future as successor of Nanto Suichō Ken. After the nuclear war, her older brother Masaya, the successor to Nanto Hisui Ken, died fighting against the Holy Emperor's forces as a member of Shu's resistance. Karen was overcome with grief and joined the warlord Ken-Oh's army to restore justice to the world. Karen was present during Rei's battle with Rofu, and she would later fight him as a member of the Ken-Oh Invasion Squad who attacked Mamiya's village. Rei defeated Karen with the Hishō Hakurei technique. In her final moments, she found peace in Rei's arms. It was shown during her battle with Rei that Raoh used a special pressure point to make her unable to feel love.