Kum-ji is a fan of the band DDL, trying everyday to go and meet them. But unfortunately, she was late in getting into the fan club for the chart-topping band, DDL. Unable to join the DDL fan club, Kum-ji almost loses hope in meeting her idols...until she finds out that a new band, Yo-I, is the rivalry band of DDL and seems to always be in the same shows as DDL. Kum-ji becomes a member of the Yo-I fan club, thinking now she finally gets to meet her favorite band, DDL. However, trying to be a fan of your favorite band's rival is no small task, especially since Kum-ji doesn't want anyone to find out the real truth. As time goes on, Kum-ji is led into difficult desicions, as well as relationships among the band.
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