Seishun no Flag c/w Gyu

 is a single by Sexy J. Both songs are covers of songs of the same titles by Watarirouka Hashiritai.

CD

 * 1) Seishun no Flag (青春のフラッグ)
 * 2) Gyu (ギュッ) (Instrumental)
 * 3) Seishun no Flag (青春のフラッグ)
 * 4) Gyu (ギュッ) (Instrumental)

DVD

 * 1) Seishun no Flag
 * 2) Bonus Video