VERIVERY will be returning with a more mature sound through 'Series 'O' [Round 0 : WHO]'.

The upcoming digital single album contains a total of two tracks, including the title track, "O", and "Wait, Spring". Through their title track, "O", the boys of VERIVERY will be unveiling a prequel story that leads up to their previous 'Series 'O'' releases, including 'Series 'O' [Round 1 : HALL]' and 'Series 'O' [Round 2 : HOLE]'.

Take a listen to a preview of VERIVERY's 'Series ‘O’ [Round 0 : WHO]' above, while you wait for the group's full comeback in just one more day, on March 23 at 6 PM KST.