The album was later repackaged under the name Hot Summer which was released on June 14, 2011. This repackage includes the singles "Hot Summer", "LA chA TA" and "Chu~♡", and the OST single "...Is It OK?".
The song "Hot Summer" is a Korean reinterpretation of the song of the same name by German girl group Monrose. A Japanese version of the song was released for the group's debut in Japan on September 12, 2012.