Girl group H1-KEY has unveiled four mysterious concept films.

On the 1st, its agency GLG released four concept films for each member of H1-KEY. In particular, it raises questions about the meaning of the phrase "Rose Blossom" at the beginning of the video and the number "1" in the contents of the post.

H1-KEY, which showed a different mysterious appearance than before, not only created a more mature visual, but also created curiosity about future activities with casts and butterfly props of the fourth finger.

HIKEY, which released its new album in January and July, was nicknamed "Vacation Idol," which means "an idol who makes a comeback every vacation."

Hiki is a four-member girl group that debuted with its first single "ATHLETIC GIRL" in January this year and was loved by global K-pop fans until the last Maxi single "RUN" activity.