In March 2014, Nakashima released her first cover album, entitled "Zutto Suki Datta: All My Covers", which included previously released and known covers from her, including "Amazing Grace", "", "I Love You", and new songs as well, including a cover from Dreams Come True's "Yasashii Kiss o Shite". This same month she also collaborated with rapper Dohzi-T in a song titled "Dare yori mo", which was included on his album "T's Music". On June 4, 2014, Nakashima released the collaboration single "Fighter" along with Miliyah Kato, which was chosen to be the theme song for the Japanese version of American film "The Amazing Spider-Man 2". A remixed version of the song was also included in the compilation album "One Love, One Rhythm" for the 2014 FIFA World Cup, as Asia's theme song for this sports event.