Single Digital (2013.10.12)01 - Sweet Refrain (Drama Ver.)
CD01 - Sweet Refrain02 - Koi wa Zenkei Shisei (恋は前傾姿勢)03 - Sweet Refrain -Original Instrumental-04 - Koi wa Zenkei Shisei -Original Instrumental- (恋は前傾姿勢)
CD+DVDDVD01 - Sweet Refrain -Video Clip-