"Akai Inochi" is a duet with Erykah Badu (whom Misia affectionately refers to as the voice of Mother Earth). The idea to team up both singers for a song was first brought up by Broderick D. Morris in May 2003, after introducing them to each other while they were both recording in New York. Badu contributed to the chorus and ad lib of "Akai Inochi", an anti-war song which speaks about how the events of 9/11 turned the "seemingly distant existence of war into the reality of now".