Raien began his life as a pirate on the Viridian Ocean on July 24 of 2006. He joined Rolling Thunder under the captaincy of Sputty and rose to senior officer in Arc Lightning during the Rolling Thunder Experiment. After Tempest merged back as Rolling Thunder, Raien remained a senior officer. He did not win a Brigand King trinket for almost a year, finally ransoming an aqua silk handkerchief from the Widow Queen on April 29, 2007.