EXO's Suho has revealed the mood sampler along with several teaser photos for "Grey Suit."

As seen previously, the EXO member is preparing to make his solo comeback after getting discharged from the military. In this mood sampler, Suho explores empty spaces and finds hope amid the greyness. 

What do you think of the concept photos below? Suho will drop the full MV of "Grey Suit" on April 4 KST, followed by another MV release for "Hurdle" on April 7 KST.