UNB's Marco is the next member in 'Boyhood' album trailers.

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In his take on the 'boyhood' theme, Marco drinks a bottle of milk and takes a break in the restroom. His fellow members Kijung took an innocent side, Ji Han Sol was a bad boy, and Daewon loved his fruit.

Look out for more of UNB's concept films and teasers coming soon, leading up to their full album release on April 7!