 LiSA released her first full solo album Lover " s " mile on February 22 , 2012 ; the album peaked at No. 7 on the Oricon weekly charts . She attended the Anime Expo 2012 in Los Angeles as a guest of honor and performed her first concert in North America there on July 1 . After her success with " Oath Sign " , she was chosen to perform the first opening theme to the 2012 anime series Sword Art Online ; the single " Crossing Field " , her second single , was released on August 8 , 2012 ; the single peaked at No. 5 on Oricon and was later certified gold by the RIAJ . Her third single " Best Day , Best Way " , which peaked at No. 6 on Oricon , was released on April 3 , 2013 , and her fourth single " Träumerei " , which peaked at No. 15 on Oricon and was used as the opening theme to the 2013 anime series Day Break Illusion , was released on August 7 , 2013 . LiSA released her second solo album Landspace on October 30 , 2013 ; the album peaked at No. 2 on Oricon charts . A <unk> titled <unk> <unk> <unk> Hi da ( <unk> , " Another Great Day " ) that contains photos of her taken by <unk> <unk> ! magazine over three years was published on November 22 , 2013 . When asked if she would revisit the meaning of her acronym in the future in an interview with <unk> at Anime Festival Asia 2013 in Singapore , she suggested <unk> international Super Apple . 
