The album also comes with a concept photo of Lee Jin-hyuk's first solo album "S.O.L". 

He unveiled the concept for his first solo album, "S.O.L," on its official SNS channel. 

The images showed Lee Jin-hyuk looking at the mirror and another image of him looking different in the mirror. 

While the image of Lee Jin-hyuk, who had different looks with the mirror in between, is creating a curiousity in the minds of fans, attention is being paid to the meaning of the mirror on the concept photo following the scheduler. 

Also, Lee Jin-hyuk's first solo album, titled "S.O.L" was first released on the day through his concept pose. Various speculations by fans about the meaning of 'L' have been followed, raising expectations for the album. 

While Lee Jin-hyuk, who started the countdown by unveiling his appearance on Wednesday, is adding to curiousity about the album, and will be released online on Nov. 4.