FeelDog shared on his group's official Twitter on the 13th, "It has already been 1 year since we made our debut with 'HOTBOY'!! Although we couldn't spend it with our ONLY ONE?? As much as you waited a long time for us! We are working hard to prepare for our comeback so we don't disappoint you. Please wait a little longer~."

SEE ALSO: Big Star join fellow member FeelDog in a special cameo for 'A Bit of Love'

Big Star made sure to share their moment of bliss with fans through cute snapshots of the boys with their cake and presents.

Japanese fans will be able to congratulate Big Star at the 'Good Vibration IN KOBE 2013' on July 21. It has also been revealed that Big Star are planning to make a comeback this August!

Happy anniversary, Big Star!

Tip: Hugh