Although the girls have been sporting serious expressions for their teaser images, the album jacket shows that they had been leading us astray before as they now sport bright and silly expressions.
The girls had planned to continue to drop hints little by little to hint at their concept, but this album jacket had somehow been leaked and started to circulate online. With this happening, the agency decided there wasn't much choice left but to just go ahead and release the image.
A Cube stated, "Although the album jacket was not going to revealed until the release of 'Pink Blossom' on the 31st, due to an unexpected incident, we have gone ahead to reveal it today." The agency also revealed that they tend to take action against those who were involved in the leaking process.