Ai Otsuka
is the debut single of Japanese singer Ai Otsuka, released on September 10, 2003 in CD-only format, then on October 1, 2003 in CD+DVD format. The title track was used as the theme song of the NTV drama "Suika". The two versions charted separately; the CD-only edition peaked 24th on the Oricon weekly singles chart and charted for twenty-one weeks while the CD+DVD edition peaked at the 86th position and charted for seventeen weeks.