A big Sailor Moon fan as a girl, Eir Aoi would pretend to be the characters Sailor Jupiter or Tuxedo Mask when she and friends would play. ∙ Although she played guitar and sang in a band in high school, she considered putting music aside and becoming a nurse after graduation. ∙ Her performance name is inspired by the Norse goddess of healing and medicine, Eir, and the Japanese word for her favorite color, blue. ∙ Her major-label debut single, 2011’s “Memoria,” doubled as the closing theme for the anime series Fate/Zero. ∙ She has provided opening or closing themes to the anime series Sword Art Online, Kill la Kill, and The Heroic Legend of Arslan.