Again, another debut of an artist from SM. Should I be excited? I guess I got tired of it already. Well anyway, I want to take a guess who that person would be. 
Uhmm.. TVXQ's Changmin?
Super Junior's Heechul?
SM Rookies's Taeyong?

My clues are just someone with the y biceps (XD)
Someone with quite a long hair
And of course, a male from SM.

Though I;m not sure if they mention that the solo artist came from boy bands XD. Just taking a random guess you know hahah
How bout you? :3