 In 2011, she began writing music for solo releases again, albeit as an independent artist.Her first single since leaving King Records and Tachytelic Records, "Sotsugyō -congratulations-" (), was released on February 6, 2011.On the day of the release of her next single, "Diary...", Hinouchi announced the release of a mini-album, "VOICE", to be released during the following summer.