Seungkwanis the next one up for Seventeen's 'Alone' project.
The group is preparing a mysterious '2017 Seventeen Project', and Chapter 1 revolves around the theme 'Alone'. 'Prime Number' is also an ongoing motif in Seventeen's teaser series as fans have to enter the prime number seen in each member's trailers on the group's official website in order to be able to access their teaser images. Seungkwan's number is '5'.
SEE ALSO: Watch Dino's trailer for Seventeen's brand new project Chapter 1 'Alone'!