"Zokkondition/Lucky Star" (ゾッ婚ディション/LUCKY☆STAR) is the twentieth single by Japanese singer Ai Otsuka under the label Avex Trax. It was released on April 7, 2010, more than a year after her last single "Bye Bye". The title "Zokkondition" is a combination of three words: "zokkon" (ゾッコン), "kekkon" (結婚), and the English word "condition" (コンディション). The single reached the sixth position on the Oricon weekly singles chart and charted for five weeks. It was released in CD-only and CD+DVD formats.