BTOB's Changsub released "Gone" MV teaser. 

Prior to his military enlistment in January, Changsub is making his solo debut with the 1st mini album 'Mark.' The album includes 6 tracks titled "Way," "Space," "Shelter," "Ever," "Gone," and "Gone" (inst).

On December 11 KST, Changsub unveiled a dramatic MV teaser for his title track. Check it out above. 

'Mark' will be coming soon on December 11.