 Keyboardist Miyako announced on March 21, 2010 that he was diagnosed with lymphoma, and on April 10 the band went on a hiatus.Sophia, as a quartet, was a guest of honor at Anime Expo in Los Angeles from July 1–4, 2010, having their first concert in the US on the 3rd.The group ended the hiatus on August 13, 2011 at the Nippon Budokan.