We see more of where the images in the jacket album came from with this teaser as it takes us behind the scenes to the girls' photoshoot in their preppy school girl clothes.

As mentioned before, the mini album will contain 6 tracks with the title track being�Duble Sidekick�and�SEION's work,�"Mr. Chu", and it'll be revealed on the 31st!

SEE ALSO: Apink members photographed as they head to JTBC Studio to film 'Knowing Bros'