At the age of 21, Murata Himeko had just obtained her Ph.D from the California Institute of Technology. She had originally dreamed of following her father's path as a scientist, lost everything because of the Houkai.<br /> <br /> In order to investigate the truth about her father's death, Himeko accepted the invitation of Theresa Apocalypse and joined the Valkyrie forces of St. Freya High School the following year.<br /><br />
